1. Proposed title of this feature request
User-defined labels on OSD/GCP clusters

2. What is the nature and description of the request?

While OCM API supports userTags for OSD-AWS (aws_type.go#L190 - https://api.openshift.com/#/default/post_api_clusters_mgmt_v1_clusters), it does not seem to support userLabels for GCP. 

We would like to be able to set user labels on GCP as well. Openshift installer supports it already.

3. Why does the customer need this? (List the business requirements here)
Team budget monitoring. in RHOAI we are working to label OCP-related resources in the cloud providers with a custom label/tag referring to the particular RHOAI component team (e.g., team: dashboard).

4. List any affected packages or components.