add option in DatadogAgent CRD to disable nonResourceRules

[celenechang]

What does this PR do?

Add CRD option to disable nonResource RBAC rules. This is required for the Operator to properly run in Google Cloud Marketplace.

Motivation

What inspired you to submit this pull request?

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

• Login to GKE test cluster running a deployer image
• Update image in Operator deployment
• Apply a DatadogAgent manifest without spec.global.disableNonResourceRules - should observe errors in the Operator logs and no datadog-agent ClusterRole
• Apply a DatadogAgent manifest with spec.global.disableNonResourceRules=true - errors should be gone and ClusterRole should be present

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: 17 lines in your changes are missing coverage. Please review.

Comparison is base (6f5b5c5) 58.58% compared to head (4996cb3) 58.56%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1074      +/-   ##
==========================================
- Coverage   58.58%   58.56%   -0.03%     
==========================================
  Files         166      166              
  Lines       20513    20521       +8     
==========================================
  Hits        12018    12018              
- Misses       7767     7775       +8     
  Partials      728      728              

Flag	Coverage Δ
unittests	58.56% <5.55%> (-0.03%)	⬇️

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

Files	Coverage Δ
apis/datadoghq/v2alpha1/datadogagent_types.go	100.00% <ø> (ø)
controllers/datadogagent/clusteragent.go	58.55% <100.00%> (ø)
controllers/datadogagent/component/agent/rbac.go	0.00% <0.00%> (ø)
...adogagent/component/clusterchecksrunner/default.go	0.68% <0.00%> (-0.01%)	⬇️

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