chore: updating pubsub system

[JaydipGabani]

What this PR does / why we need it:

Which issue(s) this PR fixes (optional, using fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when the PR gets merged):
Fixes #1037

Special notes for your reviewer:

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 53.16456% with 74 lines in your changes missing coverage. Please review.

Project coverage is 47.39%. Comparing base (3350319) to head (d8f3524).
Report is 171 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/export/dapr/fake_dapr_client.go	24.13%	22 Missing ⚠️
pkg/export/dapr/dapr.go	65.95%	14 Missing and 2 partials ⚠️
pkg/export/testdriver/testdriver.go	36.84%	11 Missing and 1 partial ⚠️
pkg/controller/export/export_config_controller.go	9.09%	10 Missing ⚠️
pkg/export/system.go	79.54%	6 Missing and 3 partials ⚠️
pkg/audit/manager.go	0.00%	5 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (3350319) and HEAD (d8f3524). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (3350319)	HEAD (d8f3524)
unittests	2	1

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3646      +/-   ##
==========================================
- Coverage   54.49%   47.39%   -7.10%     
==========================================
  Files         134      227      +93     
  Lines       12329    19089    +6760     
==========================================
+ Hits         6719     9048    +2329     
- Misses       5116     9192    +4076     
- Partials      494      849     +355     

Flag	Coverage Δ
unittests	47.39% <53.16%> (-7.10%)	⬇️

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[JaydipGabani]

Still working on doc changes.