tiup cluster support router service mcs

[bufferflies]

What problem does this PR solve?

close #xxx

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]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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Details

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[pingcap-cla-assistant]

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 7.85124% with 223 lines in your changes missing coverage. Please review.
✅ Project coverage is 38.67%. Comparing base (bdee7c1) to head (3bb2b9b).

Files with missing lines	Patch %	Lines
pkg/cluster/spec/router.go	3.29%	146 Missing and 1 partial ⚠️
pkg/cluster/api/pdapi.go	0.00%	43 Missing ⚠️
pkg/cluster/spec/validate.go	40.00%	5 Missing and 1 partial ⚠️
pkg/cluster/task/update_meta.go	0.00%	6 Missing ⚠️
pkg/cluster/template/scripts/router.go	50.00%	3 Missing and 3 partials ⚠️
pkg/cluster/spec/monitoring.go	0.00%	5 Missing ⚠️
pkg/cluster/operation/upgrade.go	0.00%	3 Missing ⚠️
pkg/cluster/template/config/prometheus.go	0.00%	3 Missing ⚠️
components/playground/playground.go	0.00%	2 Missing ⚠️
components/cluster/command/upgrade.go	50.00%	1 Missing ⚠️
... and 1 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2636      +/-   ##
==========================================
- Coverage   38.87%   38.67%   -0.20%     
==========================================
  Files         358      360       +2     
  Lines       37256    37493     +237     
==========================================
+ Hits        14480    14497      +17     
- Misses      20962    21177     +215     
- Partials     1814     1819       +5     

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[bufferflies]

/ping @rleungx