playground: support scaling ms instances when using playground

[rleungx]

What problem does this PR solve?

close #2418

What is changed and how it works?

Check List

Tests

• Manual test (add detailed scripts or steps below)

# xxx @ cloud-ecosystem-00 in ~/workspace/tiup on git:fix-health-check x [14:23:04]
$ bin/tiup-playground scale-out --tso 1

# xxx @ cloud-ecosystem-00 in ~/workspace/tiup on git:fix-health-check x [14:23:56]
$ bin/tiup-playground display
Pid      Role        Uptime
---      ----        ------
1664279  pd          50.760217075s
1664294  tso         50.047913364s
1668333  tso         5.790315547s
1664307  scheduling  49.294502817s
1664365  tikv        43.760522609s
1664865  tidb        43.38240817s
1665074  tiflash     34.235445093s

# xxx @ cloud-ecosystem-00 in ~/workspace/tiup on git:fix-health-check x [14:24:02]
$ bin/tiup-playground scale-in --pid 1664294
scale in tso success

# xxx @ cloud-ecosystem-00 in ~/workspace/tiup on git:fix-health-check x [14:24:11]
$ bin/tiup-playground display
Pid      Role        Uptime
---      ----        ------
1664279  pd          1m4.192541288s
1668333  tso         19.222638732s
1664307  scheduling  1m2.726825553s
1664365  tikv        57.192846277s
1664865  tidb        56.814730897s
1665074  tiflash     47.667768248s

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

[kaaaaaaang]

/lgtm

[kaaaaaaang]

/approve

[ti-chi-bot]

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 50.14%. Comparing base (50abc4f) to head (70b6f30).

❗ Current head 70b6f30 differs from pull request most recent head 09852d8. Consider uploading reports for the commit 09852d8 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2417   +/-   ##
=======================================
  Coverage   50.14%   50.14%           
=======================================
  Files         333      333           
  Lines       35867    35866    -1     
=======================================
  Hits        17984    17984           
+ Misses      15521    15520    -1     
  Partials     2362     2362           

Flag	Coverage Δ
tiup	33.71% <ø> (ø)

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[kaaaaaaang]

/lgtm

[kaaaaaaang]

/approve

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-05-09 07:25:53.380045768 +0000 UTC m=+1119707.137181336: ☑️ agreed by kaaaaaaang.
• 2024-05-13 05:32:47.73345497 +0000 UTC m=+1458521.490590543: ✖️🔁 reset by ti-chi-bot[bot].
• 2024-05-13 17:28:45.610124908 +0000 UTC m=+1501479.367260488: ☑️ agreed by kaaaaaaang.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kaaaaaaang

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