Add test for buildQuickSyncPipeline

[Warashi]

What this PR does / why we need it:

• Add test for buildQuickSyncPipeline
• Add K8S_ROLLBACK stage definition

Which issue(s) this PR fixes:

Part of #4980

Does this PR introduce a user-facing change?: No

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 22.92%. Comparing base (31e91de) to head (435ccf7).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5227      +/-   ##
==========================================
+ Coverage   22.81%   22.92%   +0.11%     
==========================================
  Files         419      419              
  Lines       45319    45321       +2     
==========================================
+ Hits        10340    10391      +51     
+ Misses      34183    34133      -50     
- Partials      796      797       +1     

Flag	Coverage Δ
	22.92% <100.00%> (+0.11%)	⬆️

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