Add release note

Author: technowhizz

releasenotes/notes/add-ceph-mgr-exporter-endpoints-f7d3c8b1131f6982.yaml

@@ -0,0 +1,7 @@
+---
+features:
+  - |
+    Adds code to the globals.yml file to add endpoints for the
+    ceph_mgr_exporter. If ceph is configured correctly, managers will be
+    under the mgrs inventory group. If this group is empty, then the
+    variable will just be empty (the KA default).