Log text response

[mkmer]

Description:

Refactor validate_response() to dump text if found in JSON response.

Related issue (if applicable): fixes #

Checklist:

• Local tests with tox run successfully PR cannot be meged unless tests pass
• Changes tested locally to ensure platform still works as intended
• Tests added to verify new code works

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (3bde710) 99.86% compared to head (0309e7b) 99.72%.

Files	Patch %	Lines
blinkpy/auth.py	60.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #845      +/-   ##
==========================================
- Coverage   99.86%   99.72%   -0.14%     
==========================================
  Files           8        8              
  Lines        1464     1467       +3     
==========================================
+ Hits         1462     1463       +1     
- Misses          2        4       +2     

Flag	Coverage Δ
unittests	99.72% <60.00%> (-0.14%)	⬇️

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[mkmer]

Sorry about all of the "acitivity" on the PR's. I think this will be the last logging effort - at least we will see what the message is that Blink doesn't like.
For me at the moment, Blink is returning a 406 with no body (but text encoded). It really looks like they are having issues with the backend yet my app still seems to work fine. Maybe time to re-look at what the latest android app is using for end points.

[fronzbot]

One thought I have (since the app works fine) is that maybe the user agent we're sending is causing issues. That has not been updated in a long time

blinkpy/blinkpy/helpers/constants.py

Lines 23 to 26 in 3bde710

	DEFAULT_USER_AGENT = (
	"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) "
	"AppleWebKit/537.36 (KHTML, like Gecko) "
	"Chrome/71.0.3578.98 Safari/537.36"

[mkmer]

I'll see if I can get android emulator running again with MITM, it's a huge pain because you have to patch the app to bypass cert pinning. It's going to take some time for this one :(