Disable default openshift-gitops argo instance

We create it via policy. We are making this change in the
patterns-operator as well.

Author: mbaldessari

templates/policies/ocp-gitops-policy.yaml

@@ -44,6 +44,8 @@ spec:
                     env:
                       - name: ARGOCD_CLUSTER_CONFIG_NAMESPACES
                         value: "*"
+                      - name: DISABLE_DEFAULT_ARGOCD_INSTANCE
+                        value: "true"
             - complianceType: musthave
               objectDefinition:
                 kind: ConfigMap