support to specify enabled controllers

[xavier-hou]

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What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #1379

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Does this PR introduce a user-facing change?

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What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespace from that line:
/kind bug
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/kind feature
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Which issue(s) this PR fixes:

Fixes #1379

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Does this PR introduce a user-facing change?

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[codecov]

Codecov Report

Merging #1388 (ec017c0) into master (d48450d) will decrease coverage by 0.05%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #1388      +/-   ##
==========================================
- Coverage   51.88%   51.84%   -0.05%     
==========================================
  Files         124      125       +1     
  Lines       14820    14832      +12     
==========================================
  Hits         7689     7689              
- Misses       6437     6449      +12     
  Partials      694      694              

Flag	Coverage Δ
unittests	51.84% <0.00%> (-0.05%)	⬇️

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

Impacted Files	Coverage Δ
pkg/controller/util/controller_utils.go	0.00% <0.00%> (ø)

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[rambohe-ch]

@xavier-hou some webhooks maybe have not connected controllers, so we need to add a parameter --webhooks for enabling or disabling specified webhooks.

[xavier-hou]

@xavier-hou some webhooks maybe have not connected controllers, so we need to add a parameter --webhooks for enabling or disabling specified webhooks.

@rambohe-ch

1. For contollers who have corresponding webhooks, such as staticpod, if the controller is disabled, then the corresponding webhook will be disabled as well. Because we use a map controllerWebhook to check whether controller has been disabled.
   https://github.com/openyurtio/openyurt/pull/1388/files#diff-c07be401391cf159ca42b3e3c6e8f31d3d0a0a6b1b48998069b64d585a264f35R64
2. For controllers who don't have corresponding webhooks, then we do nothing.

So I think current PR is enough for enabling and disabling controllers. But If we just want to enable or disable webhooks, then we can add a new parameter --webhooks.

[xavier-hou]

@rambohe-ch We have lots of files aimed at adding controllers to yurt-manager, such as add_csrapprover.go. They are generated by newcontroller command which is convenient for controllers migration but annoying to maintain in the future. How about removing these files and accomplish all controllers register in controller.go?

[rambohe-ch]

@rambohe-ch We have lots of files aimed at adding controllers to yurt-manager, such as add_csrapprover.go. They are generated by newcontroller command which is convenient for controllers migration but annoying to maintain in the future. How about removing these files and accomplish all controllers register in controller.go?

@xavier-hou I agree your idea to combine these controller files into one file, and i'd like to create a new issue to track this case.

[rambohe-ch]

@xavier-hou and i will merge this pr at first.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
1.9% Duplication

[openyurt-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: rambohe-ch, xavier-hou

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[rambohe-ch]

/lgtm