We'll want to give user the option to add remote_write configs to both the cluster monitoring and UWM.
AC:

• decide what features we want to give users
• decide what API we want to expose to users, i.e. basic rw config, low-level relabel-config, or high-level-streamlined API
• implement the API

https://issues.redhat.com/browse/MON-1069?focusedCommentId=16252560&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16252560