revert "Add ignoreDrainFailure and DrainTimeout as controller arguments"

[shreyas-badiger]

Supporting drainTimeout and ignoreDrainFailure through command line arguments, needs more detailed approach. Hence reverting the previous PR #300 for now.

[codecov]

Codecov Report

Merging #305 (ca5cf76) into controller-v2 (df08ab0) will decrease coverage by 0.08%.
The diff coverage is 33.33%.

@@                Coverage Diff                @@
##           controller-v2     #305      +/-   ##
=================================================
- Coverage          39.17%   39.08%   -0.09%     
=================================================
  Files                  7        7              
  Lines                679      678       -1     
=================================================
- Hits                 266      265       -1     
  Misses               388      388              
  Partials              25       25              

Flag	Coverage Δ
unittests	39.08% <33.33%> (-0.09%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
controllers/common/utils.go	0.00% <ø> (ø)
controllers/rollingupgrade_controller.go	0.00% <ø> (ø)
controllers/upgrade.go	45.99% <33.33%> (-0.16%)	⬇️

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