metrics: update resource manager panel

[hfxsd]

What is changed, added or deleted? (Required)

Add metrics about Resource Controller Client

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What is the related PR or file link(s)?

• This PR is translated from:metrics: update resource manager panel  docs-cn#13211
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• Delete files
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[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• qiancai

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[HuSharp]

Do you think it needs to change https://github.com/pingcap/docs/pull/13046/files#diff-afe90555b9f3fc8a48cf84963674fbe9117337b13d089abf69558e67341e05aaR25 to Metrics about Resources?
rest LGTM!

[songrijie]

LGTM

[qiancai]

other LGTM

[hfxsd]

/merge

[ti-chi-bot]

@hfxsd: /merge in this pull request requires 2 approval(s).

In response to this:

/merge

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[hfxsd]

/merge

[ti-chi-bot]

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

Commit hash: dc40588