chore(argocd): remove finalizer on openstack components

This should have been part of 4a28a91. We are making changes to the
deployment and have seen that not preserving the resources and letting
ArgoCD set the finalizer causes it to delete the application and
re-create it on changes. We really don't want that and just want to
upgrade in place.

Author: cardoe

apps/appsets/openstack.yaml

@@ -4,6 +4,7 @@ metadata:
   name: openstack
 spec:
   syncPolicy:
+    preserveResourcesOnDeletion: true
     applicationsSync: create-update
   goTemplate: true
   goTemplateOptions: ["missingkey=error"]