amcrest setup fails if one camera doesn't respond

[psgcooldog]

Home Assistant release:
0.64

Python release:
3.5.3

Component/platform:
amcrest

Description of problem:
When configuring multiple cameras, if one fails to respond, the platform throws a configuration error.

Expected:
Working cameras configured properly, non-responsive one logged.

Problem-relevant: amcrest.yaml with a dummy ip address of non-existent camera should be sufficient to test.

Traceback (if applicable):
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Error during setup of component amcrest
Traceback (most recent call last):
  File "/srv/homeassistant/lib/python3.5/site-packages/urllib3/connection.py", line 141, in _new_conn
    (self.host, self.port), self.timeout, **extra_kw)
  File "/srv/homeassistant/lib/python3.5/site-packages/urllib3/util/connection.py", line 83, in create_connection
    raise err
  File "/srv/homeassistant/lib/python3.5/site-packages/urllib3/util/connection.py", line 73, in create_connection
    sock.connect(sa)
OSError: [Errno 113] No route to host

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/srv/homeassistant/lib/python3.5/site-packages/urllib3/connectionpool.py", line 601, in urlopen
    chunked=chunked)
  File "/srv/homeassistant/lib/python3.5/site-packages/urllib3/connectionpool.py", line 357, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/lib/python3.5/http/client.py", line 1107, in request
    self._send_request(method, url, body, headers)
  File "/usr/lib/python3.5/http/client.py", line 1152, in _send_request
    self.endheaders(body)
  File "/usr/lib/python3.5/http/client.py", line 1103, in endheaders
    self._send_output(message_body)
  File "/usr/lib/python3.5/http/client.py", line 934, in _send_output
    self.send(msg)
  File "/usr/lib/python3.5/http/client.py", line 877, in send
    self.connect()
  File "/srv/homeassistant/lib/python3.5/site-packages/urllib3/connection.py", line 166, in connect
    conn = self._new_conn()
  File "/srv/homeassistant/lib/python3.5/site-packages/urllib3/connection.py", line 150, in _new_conn
    self, "Failed to establish a new connection: %s" % e)
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x7f702c69e710>: Failed to establish a new connection: [Errno 113] No route to host

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/srv/homeassistant/lib/python3.5/site-packages/requests/adapters.py", line 440, in send
    timeout=timeout
  File "/srv/homeassistant/lib/python3.5/site-packages/urllib3/connectionpool.py", line 639, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "/srv/homeassistant/lib/python3.5/site-packages/urllib3/util/retry.py", line 388, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='192.168.3.3', port=80): Max retries exceeded with url: /cgi-bin/magicBox.cgi?action=getMachineName (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f702c69e710>: Failed to establish a new connection: [Errno 113] No route to host',))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/setup.py", line 148, in _async_setup_component
    component.setup, hass, processed_config)
  File "/usr/lib/python3.5/asyncio/futures.py", line 380, in __iter__
    yield self  # This tells Task to wait for completion.
  File "/usr/lib/python3.5/asyncio/tasks.py", line 304, in _wakeup
    future.result()
  File "/usr/lib/python3.5/asyncio/futures.py", line 293, in result
    raise self._exception
  File "/usr/lib/python3.5/concurrent/futures/thread.py", line 55, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/amcrest.py", line 99, in setup
    device.get(CONF_PASSWORD)).camera
  File "/srv/homeassistant/lib/python3.5/site-packages/amcrest/__init__.py", line 32, in __init__
    timeout_protocol=timeout_protocol
  File "/srv/homeassistant/lib/python3.5/site-packages/amcrest/http.py", line 67, in __init__
    self._token = self._generate_token()
  File "/srv/homeassistant/lib/python3.5/site-packages/amcrest/http.py", line 81, in _generate_token
    req = requests.get(url, auth=auth)
  File "/srv/homeassistant/lib/python3.5/site-packages/requests/api.py", line 72, in get
    return request('get', url, params=params, **kwargs)
  File "/srv/homeassistant/lib/python3.5/site-packages/requests/api.py", line 58, in request
    return session.request(method=method, url=url, **kwargs)
  File "/srv/homeassistant/lib/python3.5/site-packages/requests/sessions.py", line 508, in request
    resp = self.send(prep, **send_kwargs)
  File "/srv/homeassistant/lib/python3.5/site-packages/requests/sessions.py", line 618, in send
    r = adapter.send(request, **kwargs)
  File "/srv/homeassistant/lib/python3.5/site-packages/requests/adapters.py", line 508, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='192.168.3.3', port=80): Max retries exceeded with url: /cgi-bin/magicBox.cgi?action=getMachineName (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f702c69e710>: Failed to establish a new connection: [Errno 113] No route to host',))
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of sensor.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform sensor.amcrest: Could not setup all dependencies.
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of camera.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform camera.amcrest: Could not setup all dependencies.
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of sensor.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform sensor.amcrest: Could not setup all dependencies.
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of sensor.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform sensor.amcrest: Could not setup all dependencies.
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of sensor.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform sensor.amcrest: Could not setup all dependencies.
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of sensor.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform sensor.amcrest: Could not setup all dependencies.
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of sensor.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform sensor.amcrest: Could not setup all dependencies.
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of sensor.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform sensor.amcrest: Could not setup all dependencies.
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of camera.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform camera.amcrest: Could not setup all dependencies.
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of camera.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform camera.amcrest: Could not setup all dependencies.
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of camera.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform camera.amcrest: Could not setup all dependencies.
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of camera.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform camera.amcrest: Could not setup all dependencies.
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of camera.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform camera.amcrest: Could not setup all dependencies.
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of camera.amcrest. Setup failed for dependencies: amcrest
2018-02-27 15:45:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform camera.amcrest: Could not setup all dependencies.
2018-02-27 15:45:11 WARNING (MainThread) [homeassistant.components.media_player] Setup of platform onkyo is taking over 10 seconds.
2018-02-27 15:45:20 WARNING (Thread-49) [netdisco.ssdp] Found malformed XML at http://192.168.1.142:9080: status=ok