examples: update monitoring and grafana example

[nexustar]

What problem does this PR solve?

• close The file need update #1834

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 #1843 (b861eb2) into master (58f86e8) will decrease coverage by 5.18%.
The diff coverage is n/a.

❗ Current head b861eb2 differs from pull request most recent head b145169. Consider uploading reports for the commit b145169 to get more accurate results

@@            Coverage Diff             @@
##           master    #1843      +/-   ##
==========================================
- Coverage   52.94%   47.76%   -5.18%     
==========================================
  Files         303      302       -1     
  Lines       34695    34684      -11     
==========================================
- Hits        18366    16564    -1802     
- Misses      14175    15969    +1794     
+ Partials     2154     2151       -3     

Flag	Coverage Δ
playground	12.63% <ø> (ø)
tiup	14.38% <ø> (ø)
unittest	?

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

Impacted Files	Coverage Δ
components/dm/ansible/worker.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/meta/err.go	0.00% <0.00%> (-76.19%)	⬇️
pkg/cluster/api/error.go	0.00% <0.00%> (-75.00%)	⬇️
pkg/crypto/rand/passwd.go	0.00% <0.00%> (-75.00%)	⬇️
pkg/telemetry/node_info.go	0.00% <0.00%> (-70.73%)	⬇️
pkg/utils/error.go	0.00% <0.00%> (-64.29%)	⬇️
components/dm/ansible/import.go	0.00% <0.00%> (-61.63%)	⬇️
pkg/telemetry/scrub.go	12.31% <0.00%> (-60.00%)	⬇️
pkg/cluster/executor/local.go	0.00% <0.00%> (-59.38%)	⬇️
pkg/cluster/ansible/inventory.go	0.00% <0.00%> (-57.78%)	⬇️
... and 43 more

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[srstack]

/merge

[ti-chi-bot]

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

Commit hash: d9f86b7

[ti-chi-bot]

@nexustar: Your PR was out of date, I have automatically updated it for you.

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