Refactor: move openebs and sealed-secrets to ArgoCD, use valuesObject

- Remove OpenEBS from k0s.yaml bootstrap (deploy via ArgoCD instead)
- Remove sealed-secrets from bootstrap Helm chart (deploy via ArgoCD)
- Convert helm values to valuesObject in Argo apps

apps/capi/cluster-api-operator.yaml

@@ -10,7 +10,7 @@ spec:
     targetRevision: 0.15.1
     chart: cluster-api-operator
     helm:
-      values: |
+      valuesObject:
         cert-manager:
           enabled: false
   destination: