Update registry operator deployment specs to match changes on the registry server and registry viewer

[michael-valdron]

Please specify the area for this PR
registry server
registry viewer

What does does this PR do / why we need it:

With the updates done the registry server build and deployment process along with the new and separated registry viewer, additional changes are needed to how the registry operator deploys the devfile registry to Kubernetes and OpenShift. These changes are as follows:

• Support for headless deployment of the registry server
• Separate container deployment of the registry viewer (when headless mode is disabled)
• Removal of the startup probe on the registry server container to test if registry viewer is locally running

Which issue(s) this PR fixes:

Fixes #?

fixes devfile/api#747

PR acceptance criteria:

• Test Coverage
  • Are your changes sufficiently tested, and are any applicable test cases added or updated to cover your changes?
• Gosec scans
  • Fix all MEDIUM and higher findings and/or annotate a finding per gosec instructions: https://github.com/securego/gosec#annotating-code to address why a finding is not a security issue

Documentation

• Does the registry operator documentation need to updated with your changes?

How to test changes / Special notes to the reviewer:

[openshift-ci]

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

[codecov]

Codecov Report

Base: 24.28% // Head: 23.16% // Decreases project coverage by -1.12% ⚠️

Coverage data is based on head (9e36862) compared to base (07d69b2).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #28      +/-   ##
==========================================
- Coverage   24.28%   23.16%   -1.13%     
==========================================
  Files          22       22              
  Lines        1054     1105      +51     
==========================================
  Hits          256      256              
- Misses        789      840      +51     
  Partials        9        9              

Impacted Files	Coverage Δ
api/v1alpha1/devfileregistry_types.go	100.00% <ø> (ø)
api/v1alpha1/zz_generated.deepcopy.go	26.22% <0.00%> (-0.60%)	⬇️
controllers/update.go	0.00% <0.00%> (ø)
pkg/registry/configmap.go	0.00% <0.00%> (ø)
pkg/registry/defaults.go	59.18% <0.00%> (-15.18%)	⬇️
pkg/registry/deployment.go	0.00% <0.00%> (ø)

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[michael-valdron]

testing blocked by PR devfile/registry#149

[openshift-ci]

@michael-valdron: 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/v4.11-registry-operator-integration-test	d77a6c5	link	true	/test v4.11-registry-operator-integration-test

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: johnmcollier, michael-valdron

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