[fix] : use label for filtering if vpcid is not set

[rahulait]

What this PR does / why we need it:
This PR uses label for filtering if vpc id is not yet set. Once vpc id gets set, its used going forward for filtering.
Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

TODOs:

• squashed commits
• includes documentation
• adds unit tests
• adds or updates e2e tests

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.16%. Comparing base (54184a9) to head (74b86fc).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #811      +/-   ##
==========================================
+ Coverage   63.14%   63.16%   +0.02%     
==========================================
  Files          71       71              
  Lines        7332     7336       +4     
==========================================
+ Hits         4630     4634       +4     
  Misses       2428     2428              
  Partials      274      274              

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