Statestore: Retry on connection errors

[amorken]

The SDK doesn't return a requests ConnectionError when it fails to connect, it returns a CogniteConnectionError. Retry on CogniteException to retry both CogniteAPIErrors and CogniteConnectionErrors.

[codecov]

Codecov Report

Merging #273 (f57c1a1) into master (7983f2e) will decrease coverage by 0.05%.
Report is 1 commits behind head on master.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #273      +/-   ##
==========================================
- Coverage   78.73%   78.69%   -0.05%     
==========================================
  Files          22       22              
  Lines        1919     1920       +1     
==========================================
  Hits         1511     1511              
- Misses        408      409       +1     

Files	Coverage Δ
cognite/extractorutils/__init__.py	100.00% <100.00%> (ø)
cognite/extractorutils/statestore.py	91.30% <100.00%> (-0.05%)	⬇️

... and 2 files with indirect coverage changes

[mathialo]

Thanks!

There's a version number in __init__.py which also needs updating, and please add a little line in the changelog about the release :)

[amorken]

I'd squash the last two commits into the former, but meh I never bothered cloning this repo, I did it all in the github editor... x_x