chore(pipeline): mark openshift as import only so it can manually be imported

Author: ludwig-mueller

.catalog-onboard-pipeline.yaml

@@ -21,6 +21,7 @@ offerings:
       - name: standard-openshift
         mark_ready: false
         install_type: fullstack
+        import_only: true
         scc:
           instance_id: d9f6ba0c-dd0e-4348-a834-6002b675fe40
           region: us-south