fix (sysadvisor): pap - fixes of defects identified in integration validation

[h-w-chen]

What type of PR is this?

Bug fixes

What this PR does / why we need it:

this PR has 3 fixes:

1. explicit internal-op over autonomy in last 2 minutes (behavior change);
2. power cap sock file folders creation in case it is not there;
3. split power cap server and plugin to avoid recursive reference chain via plugin wrapper

[codecov]

Codecov Report

Attention: Patch coverage is 56.75676% with 16 lines in your changes missing coverage. Please review.

Project coverage is 56.18%. Comparing base (6273a71) to head (07840c5).
Report is 25 commits behind head on main.

Files with missing lines	Patch %	Lines
...lugin/poweraware/evictor/server/evictor_service.go	63.63%	11 Missing and 1 partial ⚠️
...advisor/plugin/poweraware/capper/server/service.go	0.00%	3 Missing ⚠️
.../agent/sysadvisor/plugin/poweraware/power_aware.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #728      +/-   ##
==========================================
+ Coverage   56.05%   56.18%   +0.12%     
==========================================
  Files         597      598       +1     
  Lines       67958    68035      +77     
==========================================
+ Hits        38094    38224     +130     
+ Misses      25807    25762      -45     
+ Partials     4057     4049       -8     

Flag	Coverage Δ
unittest	56.18% <56.75%> (+0.12%)	⬆️

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