Fix Cloud Logging from auto run.

[wtgee]

• Cloud logging is decided from the config rather than env vars.
• Param passed to get_logger(use_cloud_logging=True)
• Can force DEBUG level from cli with pocs run --cloud-logging run.
• Put unit_id into cloud log.

Pulled from #1244.

[codecov]

Codecov Report

Attention: Patch coverage is 21.95122% with 32 lines in your changes are missing coverage. Please review.

Project coverage is 71.98%. Comparing base (ebb51ec) to head (314ee36).

❗ Current head 314ee36 differs from pull request most recent head 1ba4715. Consider uploading reports for the commit 1ba4715 to get more accurate results

Files	Patch %	Lines
src/panoptes/pocs/utils/logger.py	0.00%	19 Missing and 1 partial ⚠️
src/panoptes/pocs/core.py	45.45%	6 Missing ⚠️
src/panoptes/pocs/utils/cli/run.py	0.00%	6 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1245      +/-   ##
===========================================
- Coverage    72.00%   71.98%   -0.02%     
===========================================
  Files          101      101              
  Lines         8387     8389       +2     
  Branches      1188     1187       -1     
===========================================
  Hits          6039     6039              
- Misses        2192     2195       +3     
+ Partials       156      155       -1     

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