Add SLI metrics URL to clc rbac

[jennchenn]

What does this PR do?

As a follow-up to #910, we want to be able to query the SLI metrics URL from cluster check runners as well.

Motivation

This change is necessary to support the corresponding changes to the control plane checks to support SLI metrics.

Additional Notes

Anything else we should know when reviewing?

Minimum Agent Versions

Are there minimum versions of the Datadog Agent and/or Cluster Agent required?

• Agent: vX.Y.Z
• Cluster Agent: vX.Y.Z

Describe your test plan

1. make build
2. make docker-build
3. make deploy
4. I then applied a manifest with cluster check workers enabled, and verified that the datadog-cluster-checks-runner cluster role changes were applied appropriately

Checklist

• PR has at least one valid label: bug, enhancement, refactoring, documentation, tooling, and/or dependencies
• PR has a milestone or the qa/skip-qa label

[codecov-commenter]

Codecov Report

Attention: 5 lines in your changes are missing coverage. Please review.

Comparison is base (6f5b5c5) 58.58% compared to head (d6d8332) 58.57%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1072      +/-   ##
==========================================
- Coverage   58.58%   58.57%   -0.01%     
==========================================
  Files         166      166              
  Lines       20513    20516       +3     
==========================================
  Hits        12018    12018              
- Misses       7767     7770       +3     
  Partials      728      728              

Flag	Coverage Δ
unittests	58.57% <0.00%> (-0.01%)	⬇️

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

Files	Coverage Δ
...adogagent/component/clusterchecksrunner/default.go	0.69% <0.00%> (-0.01%)	⬇️

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