Add selector handling in k8s plugin sync and rollback stage

[Warashi]

What this PR does:

This PR partially resolves TODO in K8S_SYNC and K8S_ROLLBACK implementation of the Kubernetes plugin.

Why we need it:

To make the k8s plugin behave the same as the current piped's Kubernetes deployment feature.

Which issue(s) this PR fixes:

Part of #4980

Does this PR introduce a user-facing change?:

• How are users affected by this change:
• Is this breaking change:
• How to migrate (if breaking change):

[codecov]

Codecov Report

Attention: Patch coverage is 24.00000% with 19 lines in your changes missing coverage. Please review.

Project coverage is 26.30%. Comparing base (14f3d0b) to head (e84c32f).
Report is 15 commits behind head on master.

Files with missing lines	Patch %	Lines
...p/pipedv1/plugin/kubernetes/deployment/rollback.go	0.00%	9 Missing ⚠️
...g/app/pipedv1/plugin/kubernetes/deployment/sync.go	12.50%	6 Missing and 1 partial ⚠️
...g/app/pipedv1/plugin/kubernetes/deployment/misc.go	62.50%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5577      +/-   ##
==========================================
- Coverage   26.33%   26.30%   -0.04%     
==========================================
  Files         467      469       +2     
  Lines       50114    50186      +72     
==========================================
+ Hits        13198    13199       +1     
- Misses      35860    35930      +70     
- Partials     1056     1057       +1     

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[khanhtc1202]

LGTM 👍