[KYUUBI #6326] Load existing pods and services when initializing the k8s client

[turboFei]

🔍 Description

Issue References 🔗

Close #6326
Seems that the informer will ignore the existing resources if no add/update/deletion.

It is better to load it one time when initializing the server.

We also audit the engine service in this pr.

Describe Your Solution 🔧

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Types of changes 🔖

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Test Plan 🧪

Behavior Without This Pull Request ⚰️

Behavior With This Pull Request 🎉

Related Unit Tests

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Checklist 📝

• This patch was not authored or co-authored using Generative Tooling

Be nice. Be informative.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 35 lines in your changes are missing coverage. Please review.

Project coverage is 58.42%. Comparing base (90491fc) to head (a8b5f8f).
Report is 2 commits behind head on master.

Files	Patch %	Lines
...kyuubi/engine/KubernetesApplicationOperation.scala	0.00%	23 Missing ⚠️
...uubi/engine/KubernetesApplicationAuditLogger.scala	0.00%	12 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6327      +/-   ##
============================================
- Coverage     58.45%   58.42%   -0.03%     
  Complexity       24       24              
============================================
  Files           653      653              
  Lines         39834    39854      +20     
  Branches       5477     5474       -3     
============================================
+ Hits          23283    23285       +2     
- Misses        14064    14079      +15     
- Partials       2487     2490       +3     

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[zwangsheng]

Mostly fine. I'm worried about whether we're hitting Api Server in a special case with this once load operation. WDYT @pan3793

[turboFei]

any comments? @pan3793