completion: show cluster list when click tab

[nexustar]

What problem does this PR solve?

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Code changes

• Has exported function/method change
• Has exported variable/fields change
• Has interface methods change
• Has persistent data change

Side effects

• Possible performance regression
• Increased code complexity
• Breaking backward compatibility

Related changes

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

Release notes:

NONE

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• srstack

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[codecov-commenter]

Codecov Report

Merging #1891 (8bcd891) into master (7ad779c) will decrease coverage by 2.73%.
The diff coverage is 2.16%.

❗ Current head 8bcd891 differs from pull request most recent head 2723be5. Consider uploading reports for the commit 2723be5 to get more accurate results

@@            Coverage Diff             @@
##           master    #1891      +/-   ##
==========================================
- Coverage   47.77%   45.04%   -2.73%     
==========================================
  Files         307      307              
  Lines       35161    35373     +212     
==========================================
- Hits        16795    15931     -864     
- Misses      16380    17537    +1157     
+ Partials     1986     1905      -81     

Flag	Coverage Δ
cluster	28.81% <3.79%> (-4.22%)	⬇️
dm	24.45% <4.17%> (-0.08%)	⬇️
tiup	14.35% <0.00%> (ø)
unittest	21.05% <0.00%> (-0.15%)	⬇️

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

Impacted Files	Coverage Δ
components/cluster/command/clean.go	55.10% <0.00%> (-7.69%)	⬇️
components/cluster/command/deploy.go	58.33% <0.00%> (-6.48%)	⬇️
components/cluster/command/destroy.go	60.53% <0.00%> (-11.35%)	⬇️
components/cluster/command/disable.go	30.77% <0.00%> (-9.23%)	⬇️
components/cluster/command/display.go	43.48% <0.00%> (-11.07%)	⬇️
components/cluster/command/edit_config.go	34.78% <0.00%> (-12.28%)	⬇️
components/cluster/command/enable.go	30.77% <0.00%> (-9.23%)	⬇️
components/cluster/command/exec.go	66.67% <0.00%> (-19.05%)	⬇️
components/cluster/command/prune.go	59.09% <0.00%> (-22.16%)	⬇️
components/cluster/command/reload.go	35.71% <0.00%> (-22.62%)	⬇️
... and 67 more

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[AstroProfundis]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 387c964