HEALTH_WARN, if require-osd-release is < mimic and OSD wants to join the cluster
Pull request ID:
When upgrading a cluster to octopus, users should get a warning, if require-osd-release is < mimic as this prevents osds from joining the cluster.
Right now, we get a INF in the logs:
cluster [INF] disallowing boot of octopus+ OSD osd.1 v1:172.16.1.25:6800/3051821808 because require_osd
this should be a HEALTH_WARN instead.