INTLY-10438 - Implement conditional serviceaccount creation

[HVBE]

Description

• Implements a new field in the Grafana CRD to allow users to skip ServiceAccount creation, this means that the service account will have to be created manually and won't be reconciled by the operator
• Serviceaccount creation can be skipped with Spec.skipCreateServiceAccount: True

Relevant issues/tickets

https://issues.redhat.com/browse/INTLY-10438

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• This change requires a documentation update
• I have added tests that prove my fix is effective or that my feature works
• I have added a test case that will be used to verify my changes
• Verified independently on a cluster by reviewer

Verification steps

These steps verify scenarios where the user will switch from a managed serviceaccount to an unmanaged one and back to a managed account

• Deploy Grafana as normal
• Run the operator
• Ensure the serviceaccount is created
• Reapply the Grafana CR with Spec.skipCreateServiceAccount: True
• Ensure the operator no longer reconciles the grafana-serviceaccount serviceaccount with kubectl get serviceaccounts -n <your namespace>
• grafana-serviceaccount should no longer be recreated
• Remove Spec.skipCreateServiceAccount: True or switch it to False
• Ensure the operator recreates the serviceaccount

[CathalOConnorRH]

/lgtm

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: pb82

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[pb82]

/lgtm

[HVBE]

/lgtm

[openshift-ci-robot]

@HubertStefanski: you cannot LGTM your own PR.

In response to this:

/lgtm

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[pb82]

/lgtm