Workloadspread support statefulset

[veophi]

Signed-off-by: mingzhou.swx mingzhou.swx@alibaba-inc.com

Ⅰ. Describe what this PR does

StatefulSet has special logic about pod assignment for subsets. For example, suppose that we have the following sub sets config:

subsets:
- name: subset-a
  maxReplicas: 5
- name: subset-b
  maxReplicas: 5
- name: subset-c

the pods with order within [0, 5) will be assigned to subset-a;
the pods with order within [5, 10) will be assigned to subset-b;
the pods with order within [10, inf) will be assigned to subset-c.

Note:

1. DO NOT SUPPORT set percentage as subset[x].maxReplicas for all StatefulSet;
2. DO NOT SUPPORT reserveOrdinals feature for Advanced StatefulSet;

[codecov-commenter]

Codecov Report

Merging #1056 (dd622ea) into master (4263a74) will decrease coverage by 0.27%.
The diff coverage is 20.86%.

❗ Current head dd622ea differs from pull request most recent head e323d36. Consider uploading reports for the commit e323d36 to get more accurate results

@@            Coverage Diff             @@
##           master    #1056      +/-   ##
==========================================
- Coverage   49.30%   49.02%   -0.28%     
==========================================
  Files         125      125              
  Lines       12355    12466     +111     
==========================================
+ Hits         6092     6112      +20     
- Misses       5322     5412      +90     
- Partials      941      942       +1     

Flag	Coverage Δ
unittests	49.02% <20.86%> (-0.28%)	⬇️

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

Impacted Files	Coverage Δ
...loadspread/validating/workloadspread_validation.go	71.91% <0.00%> (-2.56%)	⬇️
...ler/workloadspread/workloadspread_event_handler.go	54.95% <16.66%> (-6.67%)	⬇️
pkg/util/workloadspread/workloadspread.go	50.26% <19.44%> (-11.69%)	⬇️
...troller/workloadspread/update_pod_deletion_cost.go	63.41% <57.14%> (-0.59%)	⬇️
...roller/workloadspread/workloadspread_controller.go	62.72% <100.00%> (ø)
pkg/control/sidecarcontrol/sidecarset_control.go	36.00% <0.00%> (-0.64%)	⬇️
pkg/webhook/pod/mutating/sidecarset.go	63.71% <0.00%> (+0.20%)	⬆️
pkg/controller/sidecarset/sidecarset_processor.go	65.66% <0.00%> (+0.26%)	⬆️
pkg/control/sidecarcontrol/util.go	54.92% <0.00%> (+1.59%)	⬆️
pkg/controller/cloneset/cloneset_status.go	90.00% <0.00%> (+5.00%)	⬆️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[furykerry]

/lgtm

[FillZpp]

/approve

[kruise-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: FillZpp

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [FillZpp]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment