[WIP] Disable metrics export if the number of mounts in a pod is more than 20

[kislaykishore]

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind feature

What this PR does / why we need it:
A single GCSFuse pod can support several GCSFuse mounts. This can can cause the GCSFuse metrics cardinality to blow up without an cap. This PR puts the cap on it by disabling metrics collection if the number of GCSFuse mounts exceeds 20.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:
Yes

Metrics collection will be disabled if the number of mounts in a single pod exceeds 20.

[google-oss-prow]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[google-oss-prow]

@kislaykishore: The label(s) kind/feature cannot be applied, because the repository doesn't have them.

Details

In response to this:

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind feature

What this PR does / why we need it:
A single GCSFuse pod can support several GCSFuse mounts. This can can cause the GCSFuse metrics cardinality to blow up without an cap. This PR puts the cap on it by disabling metrics collection if the number of GCSFuse mounts exceeds 20.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:
Yes

Metrics collection will be disabled if the number of mounts in a single pod exceeds 20.

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[google-oss-prow]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: kislaykishore

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