python-pygerrit2-2.0.10-bp155.2.12

- update to 2.0.10
  * Support explicit anonymous access
  * Remove unnecessary string concatenation
  * Explicitly install importlib_metadata for Python < 3.8.0
  * Travis: Add build for Python 3.8

- version update to 2.0.9
  * Run livetests against 2.15.11 and 2.16.6
  * Don't attempt to parse empty response content
  * Raise exception for error status before attempting to parse content
  * Add debug log of response content type, status code and encoding
  * Add a test for PUT request with a json file
  * Bump pytest from 4.2.1 to 4.3.0