Adding generic handling of priorityclass + namespace for flinkdeployment interpreter

[mszacillo]

What type of PR is this?
/kind feature

What this PR does / why we need it:
The default interpreter for FlinkDeployment does not currently account for namespace or priorityclass. This was done because in our use-case, the priorityclass is shared amongst tenants and can be set statically. But after thinking again, it makes more sense to have this interpretation be generic.

This is a quick PR that adds that capability.

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Added generic handling of priorityclass and namespace for default flinkdeployment interpreter

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 28.24%. Comparing base (8859cb9) to head (d79c600).
Report is 12 commits behind head on master.

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5215      +/-   ##
==========================================
- Coverage   28.25%   28.24%   -0.01%     
==========================================
  Files         632      632              
  Lines       43722    43723       +1     
==========================================
- Hits        12354    12351       -3     
- Misses      30465    30469       +4     
  Partials      903      903              

Flag	Coverage Δ
unittests	28.24% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[RainbowMango]

/lgtm
/assign @yike21
to take another look and get approval.

[yike21]

Thanks for your contribution!
/approve

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: yike21

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• pkg/resourceinterpreter/default/thirdparty/OWNERS [yike21]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment