Setup automation process of release karmada-metrics-adaptor to DockerHub

[RainbowMango]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

This PR ensures the image of karmada-metrics-adaptor could be released to DockerHub.

Which issue(s) this PR fixes: Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

cc @jwcesign

[jwcesign]

/lgmt

[karmada-bot]

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[codecov-commenter]

Codecov Report

Merging #3599 (c55fe71) into master (bddaf31) will increase coverage by 0.00%. The diff coverage is n/a.

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@@           Coverage Diff           @@
##           master    #3599   +/-   ##
=======================================
  Coverage   55.83%   55.84%           
=======================================
  Files         216      216           
  Lines       20129    20129           
=======================================
+ Hits        11240    11242    +2     
+ Misses       8284     8282    -2     
  Partials      605      605           

Flag	Coverage Δ
unittests	55.84% <ø> (+<0.01%)	:arrow_up:

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see 1 file with indirect coverage changes