Fix BloomSky KeyError: 'monitored_conditions'

[frenck]

Proposed change

BloomSky KeyError: 'monitored_conditions', broke in: Clean up access to config in various integrations v3 (#33842)

2020-04-23 14:08:36 ERROR (MainThread) [homeassistant.components.sensor] Error while setting up bloomsky platform for sensor
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 178, in _async_setup_platform
    await asyncio.wait_for(asyncio.shield(task), SLOW_SETUP_MAX_WAIT)
  File "/usr/local/lib/python3.7/asyncio/tasks.py", line 442, in wait_for
    return fut.result()
  File "/usr/local/lib/python3.7/concurrent/futures/thread.py", line 57, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/src/homeassistant/homeassistant/components/bloomsky/sensor.py", line 63, in setup_platform
    sensors = config[CONF_MONITORED_CONDITIONS]
KeyError: **'monitored_conditions'

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example entry for configuration.yaml:

# Example configuration.yaml

Additional information

• This PR fixes or closes issue: fixes BloomSky KeyError: 'monitored_conditions' #34611
• This PR is related to issue:
• Link to documentation pull request:

Checklist

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