Support in-place update containers with launch priority

[FillZpp]

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

Ⅰ. Describe what this PR does

Support in-place update containers with launch priority.

• For pods without container orders, no guarantees of the execution order during in-place update multiple containers.
• For pods with container orders:
  • keep execution order during in-place update multiple containers with different priorities.
  • no guarantees of the execution order during in-place update multiple containers with the same priority.

Ⅱ. Does this pull request fix one issue?

fixes #901

[FillZpp]

/cc @furykerry

[codecov-commenter]

Codecov Report

Merging #909 (f7ee670) into master (d6fb77a) will increase coverage by 0.02%.
The diff coverage is 53.29%.

@@            Coverage Diff             @@
##           master     #909      +/-   ##
==========================================
+ Coverage   49.14%   49.17%   +0.02%     
==========================================
  Files         119      119              
  Lines       11166    11293     +127     
==========================================
+ Hits         5488     5553      +65     
- Misses       4832     4877      +45     
- Partials      846      863      +17     

Flag	Coverage Δ
unittests	49.17% <53.29%> (+0.02%)	⬆️

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	46.48% <0.00%> (ø)
pkg/util/containermeta/env_hash.go	44.82% <0.00%> (-9.34%)	⬇️
...chpriority/container_launch_priority_controller.go	33.70% <35.71%> (-2.17%)	⬇️
pkg/controller/statefulset/stateful_set_control.go	61.40% <50.00%> (ø)
pkg/util/inplaceupdate/inplace_update.go	35.13% <54.90%> (+1.59%)	⬆️
pkg/util/inplaceupdate/inplace_update_defaults.go	49.33% <59.66%> (+9.02%)	⬆️
pkg/controller/uniteddeployment/revision.go	66.41% <0.00%> (-1.53%)	⬇️

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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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