[ISSUE-402] Flaky Test: QuorumTest#case1

[Rembrant777]

What changes were proposed in this pull request?

Fix flaky test QuorumTest#case1

Why are the changes needed?

Improve QuorumTest#case1 integration test cases stability

Does this PR introduce any user-facing change?

No

How was this patch tested?

No need

[codecov-commenter]

Codecov Report

Merging #422 (f138f19) into master (d47f703) will increase coverage by 3.08%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #422      +/-   ##
============================================
+ Coverage     58.43%   61.52%   +3.08%     
  Complexity     1613     1613              
============================================
  Files           195      189       -6     
  Lines         11063     9902    -1161     
  Branches        976      976              
============================================
- Hits           6465     6092     -373     
+ Misses         4220     3492     -728     
+ Partials        378      318      -60     

Impacted Files	Coverage Δ
...bernetes/operator/pkg/controller/controller/rss.go
...rnetes/operator/pkg/webhook/inspector/inspector.go
...y/kubernetes/operator/pkg/webhook/inspector/pod.go
deploy/kubernetes/operator/pkg/webhook/manager.go
...oy/kubernetes/operator/pkg/controller/util/util.go
...y/kubernetes/operator/pkg/webhook/inspector/rss.go

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[jerqi]

Make sense. LGTM, thanks @Rembrant777

[zuston]

Thanks. @Rembrant777