Feature/postgresql logical db controller

[mploski]

Description

Adds the database CRD and validation

Key Changes

Highlight the updates in specific files

Testing and Verification

Added few validation yaml files to examples

Related Issues

Jira tickets, GitHub issues, Support tickets...

PR Checklist

• Code changes adhere to the project's coding standards.
• Relevant unit and integration tests are included.
• Documentation has been updated accordingly.
• All tests pass locally.
• The PR description follows the project's guidelines.

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[limak9182]

nit: !has(oldSelf.clusterRef) is always true, as ClusterRef is Required

[mploski]

it is not when it is first deployment not update

[limak9182]

"A rule that contains an expression referencing the identifier oldSelf is implicitly considered a transition rule. [...] Transition rules never apply to create operations." Source: https://kubernetes.io/docs/tasks/extend-kubernetes/custom-resources/custom-resource-definitions/#transition-rules

Based on that, this rule is not running on the first deployment, as there is no oldSelf that could be used at all.

[DmytroPI-dev]

LGTM!