Allow Stackgres versions > 1.5.0

[wejdross]

• upgrading component, so it's possible to use Stackgres versions greater than 1.5.0
• changing default Stackgres version to 1.7

Breaking changes:

• impossible to use with Stackgres < 1.6.0

Checklist

• PR contains a single logical change (to build a better changelog).
• Update the documentation.
• Categorize the PR by setting a good title and adding one of the labels:
  bug, enhancement, documentation, change, breaking, dependency
  as they show up in the changelog.
• Link this PR to related issues or PRs.

[Kidswiss]

Please test this with ArgoCD first.

From my personal experience on my homelab we need a bit of post processing to make it really work with ArgoCD:

app.jsonnet we need to change the app to ServerSideApply=true or otherwise it can't deploy the CRDs. Also, we need to ignore the caBundles in the webhook configs, otherwise the webhooks will break:

  syncPolicy:
    automated: {}
    syncOptions:
      - ServerSideApply=true
 ...
  ignoreDifferences:
  - group: apps
    kind: Deployment
    jsonPointers:
    - /spec/replicas
  - group: admissionregistration.k8s.io
    kind: ValidatingWebhookConfiguration
    jqPathExpressions:
    - '.webhooks[]?.clientConfig.caBundle'
  - group: admissionregistration.k8s.io
    kind: MutatingWebhookConfiguration
    jqPathExpressions:
    - '.webhooks[]?.clientConfig.caBundle'

There were a few other minor things that I had to adjust as they never got in sync, but I'm not sure what it was.

[wejdross]

@Kidswiss @TheBigLee please take a look, especially on clusterrolebinding and role files, I added them very low numbers so they are applied earlier rather than latyer, they also share argo PreSync hook.

it should be now sufficient. What I've found out during migration so far:

• secret name differs, the one responsible for setting password - whole cleartextpassword script - adjusted
• null entries must be deleted otherwise argoCD breaks
• we need to clean secrets, clusterroles, issuers and certs before migrating from 1.5 -> 1.7
• we need to tell argo to ignore some fields, mostly defaults being set or it start to -> done in app.jsonnet

[wejdross]

guys, please check new feature to restart operator and restapi during sync - tested it on lab, and besides minimal downtime (~60-90seconds) everything is green afterwards