Fix consider appKind when filtering target pods

[MichaelMorrisEst]

What this PR does / why we need it: The App Kind specified by the user shall be taken into consideration when identifying target pods for the experiment so the experiment is carried out on pods that are consistent with the users inputs

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Fixes #679

Special notes for your reviewer:

Checklist:

• [X] Fixes #
• [ ] PR messages has document related information
• [ ] Labelled this PR & related issue with breaking-changes tag
• [ ] PR messages has breaking changes related information
• [ ] Labelled this PR & related issue with requires-upgrade tag
• [ ] PR messages has upgrade related information
• [ ] Commit has unit tests
• [ ] Commit has integration tests
• [ ] E2E run Required for the changes

[MichaelMorrisEst]

Hi @ispeakc0de If you get a chance to have a look at the updated implementation that would be great, thanks