[release-2.11] Fix: Deduplicate the __name__ label in the metrics collector

[openshift-cherrypick-robot]

This is an automated cherry-pick of #1778

/assign thibaultmg

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[thibaultmg]

/retest

[thibaultmg]

/retest

[philipgough]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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[openshift-ci]

@openshift-cherrypick-robot: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/test-e2e	15933a5	link	true	/test test-e2e

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[thibaultmg]

e2e is failing because it fails provisioning the cluster. This is probably because it asks for 4.16 ones that are not pre-prepared. Merging.