feat: support Knative Serving 1.5 Custom Health Checks

[wei840222]

update https://argo-cd.readthedocs.io/en/stable/operator-manual/health/#way-2-contribute-a-custom-health-check for Knative Serving CR in v1.5

[codecov[bot]]

Codecov Report

Base: 46.85% // Head: 46.85% // No change to project coverage :thumbsup:

Coverage data is based on head (c6ba18f) compared to base (8e57f53). Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #9719   +/-   ##
=======================================
  Coverage   46.85%   46.85%           
=======================================
  Files         240      240           
  Lines       39948    39948           
=======================================
  Hits        18719    18719           
  Misses      19336    19336           
  Partials     1893     1893           

Impacted Files	Coverage Δ
util/settings/settings.go	48.87% <0.00%> (ø)

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[crenshaw-dev]

@wei840222 is it necessary to delete the old checks? Seems like it would be nice to continue to support those.

[wei840222]

@crenshaw-dev hi, I revert the deleted files.