CP/DP Split: Openshift support

[sjberman]

Problem: Now that we have additional pods in the new architecture, we need the proper SecurityContextConstraints for running in Openshift.

Solution: Create an SCC for the cert-generator and an SCC for nginx data plane pods on startup. A Role and RoleBinding are created when deploying nginx to link to the SCC.

Testing: Verified that all objects are created and running with the proper permissions in OpenShift.

Closes #3064

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

Release notes

If this PR introduces a change that affects users and needs to be mentioned in the release notes,
please add a brief note that summarizes the change.

[codecov]

Codecov Report

Attention: Patch coverage is 63.53591% with 66 lines in your changes missing coverage. Please review.

Project coverage is 86.50%. Comparing base (6337c97) to head (e1276de).
Report is 185 commits behind head on change/control-data-plane-split.

Files with missing lines	Patch %	Lines
internal/mode/static/provisioner/eventloop.go	33.33%	30 Missing and 2 partials ⚠️
internal/mode/static/provisioner/setter.go	0.00%	15 Missing ⚠️
...nal/mode/static/provisioner/openshift/openshift.go	0.00%	14 Missing ⚠️
internal/mode/static/provisioner/provisioner.go	50.00%	2 Missing and 1 partial ⚠️
cmd/gateway/commands.go	91.66%	1 Missing ⚠️
internal/mode/static/manager.go	50.00%	1 Missing ⚠️

Additional details and impacted files

@@                         Coverage Diff                         @@
##           change/control-data-plane-split    #3278      +/-   ##
===================================================================
- Coverage                            89.74%   86.50%   -3.25%     
===================================================================
  Files                                  109      125      +16     
  Lines                                11150    14453    +3303     
  Branches                                50       62      +12     
===================================================================
+ Hits                                 10007    12502    +2495     
- Misses                                1083     1813     +730     
- Partials                                60      138      +78     

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