add crd tests, queue and move dubboctl

[sjmshsh]

A queue is added, and some expensive operations are involved in the Controller's handleEvent method, which requires a queue for buffering. Istio also uses a queue for optimization. Added some unit tests.

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
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No Coverage information
No Duplication information

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[codecov-commenter]

Codecov Report

:exclamation: No coverage uploaded for pull request base (refactor-with-go-components-experimental@6a77e69). Click here to learn what that means. The diff coverage is n/a.

@@                             Coverage Diff                             @@
##             refactor-with-go-components-experimental    #1202   +/-   ##
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  Branches                                            ?       41           
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  Hits                                                ?     2961           
  Misses                                              ?     2827           
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