Control backup gc by completed and failed bakcups number

[just1900]

Signed-off-by: just1900 [email protected]

What problem does this PR solve?

fix #3660

What is changed and how does it work?

adding MaxCompletedBackups and MaxFailedBackups fields to control backup gc.

Code changes

• [x] Has Go code change
• [ ] Has CI related scripts change

Tests

• [ ] Unit test
• [ ] E2E test
• [ ] Manual test
• [ ] No code

Side effects

• [ ] Breaking backward compatibility
• [ ] Other side effects:

Related changes

• [ ] Need to cherry-pick to the release branch
• [ ] Need to update the documentation

Release Notes

Please refer to Release Notes Language Style Guide before writing the release note.

control backup gc by completed and failed bakcups number

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• KanShiori
• csuzhangxc

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[codecov-commenter]

Codecov Report

Merging #4480 (8a025a8) into master (0d13639) will increase coverage by 9.56%. The diff coverage is 69.69%.

@@            Coverage Diff             @@
##           master    #4480      +/-   ##
==========================================
+ Coverage   62.79%   72.35%   +9.56%     
==========================================
  Files         184      188       +4     
  Lines       19875    22310    +2435     
==========================================
+ Hits        12480    16142    +3662     
+ Misses       6262     5043    -1219     
+ Partials     1133     1125       -8     

Flag	Coverage Δ
e2e	60.09% <0.00%> (?)
unittest	62.80% <71.87%> (+0.01%)	:arrow_up:

[just1900]

seems like a issue exists when backupGCByPolicy and backupGCByMaxBackups concurrently delete backups.

[just1900]

/test pull-e2e-kind-serial

[KanShiori]

/test pull-e2e-kind pull-e2e-kind-br pull-e2e-kind-tngm

[ti-chi-bot]

@just1900: PR needs rebase.

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