Report transitioning when status file not found

[larohra]

Description

Extensions can take up some time to write status file. If the Agent does not find a status file for the extension, then we report an error back to CRP which fails the operation. In order to avoid doing that and to give extensions enough time to write status files, we'll report a transitioning status back to CRP with a clear cut message stating that the status was reported by the Guest Agent due to missing status file.

Issue #

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[codecov]

Codecov Report

Merging #2330 (4079b3e) into develop (5be8d90) will decrease coverage by 0.01%.
The diff coverage is 92.30%.

@@             Coverage Diff             @@
##           develop    #2330      +/-   ##
===========================================
- Coverage    70.79%   70.78%   -0.02%     
===========================================
  Files           97       97              
  Lines        14029    14034       +5     
  Branches      2012     2013       +1     
===========================================
+ Hits          9932     9934       +2     
- Misses        3656     3657       +1     
- Partials       441      443       +2     

Impacted Files	Coverage Δ
azurelinuxagent/ga/exthandlers.py	86.22% <92.30%> (+0.05%)	⬆️
azurelinuxagent/ga/collect_telemetry_events.py	90.41% <0.00%> (-1.03%)	⬇️

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[narrieta]

I see that we still have 3 calls to create_placeholder_status_file to create the status file on some error conditions.

Should we rename this function to avoid confusion with the placeholder file mentioned in the publisher's spec, and also remove the default values for the parameters, which seem to be targeted to this one call that you are removing.

[larohra]

sure let me send an update

[narrieta]

thanks for the updates!