playground: add support of ng-monitoring

[nexustar]

What problem does this PR solve?

• close support use ng-monitoring in playground #1647

What is changed and how it works?

• boot ng-monitoring when boot monitor
• boot monitor after tidb instance

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:

• AstroProfundis

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[codecov-commenter]

Codecov Report

Merging #1648 (67518e5) into master (e7f9871) will not change coverage.
The diff coverage is n/a.

❗ Current head 67518e5 differs from pull request most recent head 402a9ae. Consider uploading reports for the commit 402a9ae to get more accurate results

@@           Coverage Diff           @@
##           master    #1648   +/-   ##
=======================================
  Coverage   15.57%   15.57%           
=======================================
  Files         151      151           
  Lines       15254    15254           
=======================================
  Hits         2376     2376           
  Misses      12361    12361           
  Partials      517      517           

Flag	Coverage Δ
integrate	15.57% <ø> (ø)
tiup	15.57% <ø> (ø)
unittest	?

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[AstroProfundis]

/merge

[ti-chi-bot]

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

Commit hash: 402a9ae