playgroud: support kv-only mode to start TiKV cluster only

[iosmanthus]

What problem does this PR solve?

For now, there is no way to create a TiKV cluster elegantly, this pull request add a --kv-only mode in tiup playgroud to support launch a TiKV cluster without TiDB related components. CLOSING #1269

What is changed and how it works?

It creates a flag named --kv-only and ensure that when it's enabled, TiDB related components should not exist in the bootOptions.

Check List

Tests

• Manual test (add detailed scripts or steps below)

> ./bin/tiup --kv-only --kv=1 --pd=1
... exit with 0

> ./bin/tiup --kv-only --db=1 --tiflash=1 --kv=1 --pd=1
... exit with 1

Side effects

• Increased code complexity

Related changes

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

Release notes:

support `kv-only` mode in `tiup playground`

[CLAassistant]

All committers have signed the CLA.

[codecov-commenter]

Codecov Report

Merging #1333 (023afc5) into master (f663f41) will increase coverage by 19.61%.
The diff coverage is n/a.

❗ Current head 023afc5 differs from pull request most recent head 536c3d7. Consider uploading reports for the commit 536c3d7 to get more accurate results

@@             Coverage Diff             @@
##           master    #1333       +/-   ##
===========================================
+ Coverage   25.88%   45.49%   +19.61%     
===========================================
  Files         264      255        -9     
  Lines       19690    18603     -1087     
===========================================
+ Hits         5097     8464     +3367     
+ Misses      13812     8756     -5056     
- Partials      781     1383      +602     

Flag	Coverage Δ
cluster	43.27% <ø> (?)
dm	25.66% <ø> (?)
integrate	45.49% <ø> (+29.74%)	⬆️
tiup	?
unittest	?

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

Impacted Files	Coverage Δ
pkg/utils/regexp.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/repository/store/store.go	0.00% <0.00%> (-100.00%)	⬇️
components/dm/ansible/worker.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/repository/utils/hash.go	0.00% <0.00%> (-81.82%)	⬇️
pkg/meta/err.go	0.00% <0.00%> (-81.25%)	⬇️
pkg/cluster/api/error.go	0.00% <0.00%> (-80.00%)	⬇️
pkg/telemetry/telemetry.go	0.00% <0.00%> (-80.00%)	⬇️
pkg/utils/semver.go	6.95% <0.00%> (-78.27%)	⬇️
pkg/repository/store/local.go	0.00% <0.00%> (-76.48%)	⬇️
pkg/repository/model/publish.go	0.00% <0.00%> (-71.43%)	⬇️
... and 242 more

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[iosmanthus]

@july2993 @lucklove PTAL

[ti-chi-bot]

[REVIEW NOTIFICATION]

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• AstroProfundis

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[AstroProfundis]

/merge

[ti-chi-bot]

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

Commit hash: ecfac66