CARRY: update(manifests): use default namespace from ODH

Author: zdtsw

config/default/kustomization.yaml

@@ -1,5 +1,5 @@
 # Adds namespace to all resources.
-namespace: openshift-operators
+namespace: opendatahub
 
 # Value of this field is prepended to the
 # names of all resources, e.g. a deployment named