Pass in aiohttp session for ONVIF

[frenck]

Proposed change

Pass in our aiohttp session into onvif.

Currently, on a shutdown of Home Assistant it throws:

/home/frenck/code/home-assistant/home-assistant/venv/lib/python3.7/site-packages/zeep/asyncio/transport.py:61: RuntimeWarning: coroutine 'noop2' was never awaited
  self.session.connector.close()
RuntimeWarning: Enable tracemalloc to get the object allocation traceback

Which is not nice, however, as a workaround (and general improvement), it won't trigger this code if we pass in our aiohttp session.

This PR adds a transport for the underlying zeep library, which the onvif-zeep-async package is able to pass through.

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
camera:
  - platform: onvif
    name: my_camera
    host: 192.168.1.2
    port: 8000
    username: admin
    password: admin

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• The code has been formatted using Black (black --fast homeassistant tests)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• Untested files have been added to .coveragerc.

The integration reached or maintains the following Integration Quality Scale:

• No score or internal
• 🥈 Silver
• 🥇 Gold
• 🏆 Platinum

[codecov]

Codecov Report

Merging #32045 into dev will not change coverage by %.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev   #32045   +/-   ##
=======================================
  Coverage   94.71%   94.71%           
=======================================
  Files         766      766           
  Lines       55568    55568           
=======================================
  Hits        52630    52630           
  Misses       2938     2938           

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