SmartThings Component Enhancements/Fixes

[andrewsayre]

Description:

Improves the SmartThings Component:

• Displays specific error message to user when SmartThings cannot validate the webhook during setup (vs. generic error today)
• Improves logging of errors received from the SmartThings API during component setup
• Improves logging of push updates received
• Fix so capabilities are not represented by more than one platform that covers the same data attribute.
  Prior to this change, Thermostats would show up as both the climate platform and 3-4 sensors -- but the sensors represent attributes already covered by the climate platform.

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.

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

• New dependencies have been added to the REQUIREMENTS variable (example).
• New dependencies are only imported inside functions that use them (example).
• New or updated dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.

If the code does not interact with devices:

• Tests have been added to verify that the new code works.

[MartinHjelmare]

Looks good!

[andrewsayre]

Uhg! There's a bug! Apparently description_placeholders doesn't also populate error messages with a place holder. I don't see any error_placeholders implementation -- is this not supported? I'll need to remove the link from the new error message.

I can't get to this until this evening, so anyone is welcome to fix.

[MartinHjelmare]

I'm not sure about this. @balloob?

[andrewsayre]

Yeah and I added the placeholder after testing it, so shame on me for not retesting!!