Add support for ContainerTask in PERIAN agent + os-storage parameter

[otarabai]

What changes were proposed in this pull request?

• Adding support for raw ContainerTask in PERIAN agent
• Adding os-storage-size parameter
• Adding environment variables setting

How was this patch tested?

Manual testing

Check all the applicable boxes

• [x] I updated the documentation accordingly.
• [x] All new and existing tests passed.
• [x] All commits are signed-off.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 72.64%. Comparing base (f2c4881) to head (019d11a). Report is 7 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #2867       +/-   ##
===========================================
+ Coverage   40.56%   72.64%   +32.07%     
===========================================
  Files         196      196               
  Lines       20526    20528        +2     
  Branches     2642     2643        +1     
===========================================
+ Hits         8326    14912     +6586     
+ Misses      12096     4900     -7196     
- Partials      104      716      +612     

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