Add kuttl tests for watcherapi creation from watcher top CR

After integrating watcherapi into watcher we need to validate watcherapi
and the nested resources are properly created as part of the Watcher
creation.

Also, this patch is removing the previous kuttl scenario which created
watcherapi directly without watcher top level CR.

Author: amoralej

tests/kuttl/test-suites/default/common/deploy-with-defaults.yaml

@@ -5,3 +5,6 @@ metadata:
   namespace: watcher-kuttl-default
 spec:
   databaseInstance: "openstack"
+  apiContainerImageURL: "quay.io/podified-master-centos9/openstack-watcher-api:current-podified"
+  decisionengineContainerImageURL: "quay.io/podified-master-centos9/openstack-watcher-decision-engine:current-podified"
+  applierContainerImageURL: "quay.io/podified-master-centos9/openstack-watcher-applier:current-podified"