Make maxUnavailable also limited to pods in new revision

[FillZpp]

Signed-off-by: FillZpp FillZpp.pub@gmail.com

Ⅰ. Describe what this PR does

Make maxUnavailable also limited to pods in new revision

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how to verify it

fixes #898

Ⅳ. Special notes for reviews

[codecov-commenter]

Codecov Report

Merging #899 (afce790) into master (af3e254) will increase coverage by 0.04%.
The diff coverage is 83.33%.

@@            Coverage Diff             @@
##           master     #899      +/-   ##
==========================================
+ Coverage   47.89%   47.94%   +0.04%     
==========================================
  Files         119      119              
  Lines       11239    11243       +4     
==========================================
+ Hits         5383     5390       +7     
+ Misses       5039     5029      -10     
- Partials      817      824       +7     

Flag	Coverage Δ
unittests	47.94% <83.33%> (+0.04%)	⬆️

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

Impacted Files	Coverage Δ
pkg/controller/cloneset/sync/cloneset_update.go	46.15% <83.33%> (+1.21%)	⬆️
pkg/controller/cloneset/cloneset_controller.go	50.59% <0.00%> (-2.38%)	⬇️
pkg/controller/daemonset/daemonset_controller.go	36.38% <0.00%> (-0.88%)	⬇️
pkg/controller/daemonset/daemonset_util.go	65.77% <0.00%> (+2.01%)	⬆️
pkg/controller/daemonset/update.go	26.76% <0.00%> (+2.52%)	⬆️

---

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[furykerry]

/lgtm

[FillZpp]

/approve

[kruise-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: FillZpp

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