Exporter service created by rook operator contains the following labels: `app=rook-ceph-exporter,rook_cluster=<cluster-name>` Label `ceph_daemon_id=exporter` is not there and therefore the service monitor selector can not discover the exporter service. This fix removes the `ceph_daemon_id=exporter` label from the exporter service monitor selector. Signed-off-by: Matej Feder <matej.feder@dnation.cloud>