🐛 Fix webhook cert duplicate volume mount path bug

[perdasilva]

Description

1. Removes the APIService volume mount - since we don't yet support APIServices (let's avoid adding things that aren't needed yet)
2. Moves the tls.crt and tls.key magic strings to constants
3. Addresses the following bug:

When installing the Red Hat Network Observability operator, we were faced with the following error:

"error for resolved bundle \"network-observability-operator.v1.7.0\" with version \"1.7.0\": failed to create resource: Deployment.apps \"netobserv-controller-manager\" is invalid: spec.template.spec.containers[0].volumeMounts[2].mountPath: Invalid value: \"/tmp/k8s-webhook-server/serving-certs\": must be unique",

The root cause is related to the operator's Deployment's Pod template spec described in the CSV that included a volume mount pointing to the webhook certificate volume mount path (but had a different name than 'webhook-cert'):

volumeMounts:
- mountPath: /tmp/k8s-webhook-server/serving-certs
name: cert
readOnly: true

This PR updates the bundle deployment generator to replace any volume/mount referencing a protected path with the OLM generated values.

Before fixes, OLMv1 generated a deployment like:

volumeMounts:
- mountPath: /tmp/k8s-webhook-server/serving-certs
name: cert
- mountPath: /etc/tls/private
name: manager-metric-tls
readOnly: true
- mountPath: /apiserver.local.config/certificates
name: apiservice-cert
- mountPath: /tmp/k8s-webhook-server/serving-certs
name: webhook-cert

volumes:
- name: cert
secret:
defaultMode: 420
secretName: webhook-server-cert
- name: manager-metric-tls
secret:
defaultMode: 420
secretName: manager-metrics-tls
- name: apiservice-cert
secret:
items:
- key: tls.crt
path: apiserver.crt
- key: tls.key
path: apiserver.key
secretName: netobserv-controller-manager-service-cert
- name: webhook-cert
secret:
items:
- key: tls.crt
path: tls.crt
- key: tls.key
path: tls.key
secretName: netobserv-controller-manager-service-cert

Now, it looks like:

volumeMounts:
- mountPath: /etc/tls/private
name: manager-metric-tls
readOnly: true
- mountPath: /tmp/k8s-webhook-server/serving-certs
name: webhook-cert

volumes:
- name: manager-metric-tls
secret:
defaultMode: 420
secretName: manager-metrics-tls
- name: webhook-cert
secret:
items:
- key: tls.crt
path: tls.crt
- key: tls.key
path: tls.key
secretName: netobserv-controller-manager-service-cert

Reviewer Checklist

• API Go Documentation
• Tests: Unit Tests (and E2E Tests, if appropriate)
• Comprehensive Commit Messages
• Links to related GitHub Issue(s)

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[camilamacedo86]

It really make sense 👍

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.17%. Comparing base (d41ddd0) to head (91dc9a1).
Report is 1 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #2002 +/- ##
=======================================
Coverage 69.17% 69.17% =======================================
Files 79 79 Lines 7027 7037 +10 =======================================
+ Hits 4861 4868 +7 - Misses 1885 1887 +2 - Partials 281 282 +1 

Flag	Coverage Δ
e2e	43.00% <0.00%> (-0.14%)	⬇️
unit	60.05% <100.00%> (+0.04%)	⬆️

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