fix problem with OperatorGroup invalid spec (when using gitops)

[trevorbox]

What is this PR About?

Describe the contents of the PR

The chart produces an invalid spec for OperatorGroups in some scenarios. This becomes a problem when using the chart with ArgoCD.

Example error from ArgoCD

one or more objects failed to apply, reason: OperatorGroup.operators.coreos.com "whatever" is invalid: spec.targetNamespaces: Invalid value: "null": spec.targetNamespaces in body must be of type array: "null".

How do we test this?

Provide commands/steps to test this PR

Apply this application to an ArgoCD instance...

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: test-operators-installer
  namespace: openshift-gitops
spec:
  destination:
    namespace: openshift-gitops
    server: 'https://kubernetes.default.svc'
  project: default
  source:
    chart: operators-installer
    repoURL: https://redhat-cop.github.io/helm-charts
    helm: 
      valuesObject:
        approveManualInstallPlanViaHook: true
        installPlanApproverAndVerifyJobsImage: quay.io/openshift/origin-cli:4.14
        operatorGroups:
        - name: whatever
          targetOwnNamespace: false
          createNamespace: true
    targetRevision: 2.4.3
  syncPolicy:
    automated:
      selfHeal: true
    syncOptions:
      - ApplyOutOfSyncOnly=true
      - PrunePropagationPolicy=foreground
      - PruneLast=true
      - ServerSideApply=true
      - FailOnSharedResource=true
      - RespectIgnoreDifferences=true
      - CreateNamespace=false

cc: @redhat-cop/day-in-the-life

[ckavili]

hey @trevorbox , thanks for the PR! would you mind to bump up the Chart version to make the linter happy please? 💚 thanks!

[trevorbox]

hey @trevorbox , thanks for the PR! would you mind to bump up the Chart version to make the linter happy please? 💚 thanks!

done

[ckavili]

thanks @trevorbox 🙌