rgw, doc: extend the documentation of rgw_keystone_admin_token.

Signed-off-by: Radoslaw Zarzynski <rzarzynski@mirantis.com>

diff --git a/doc/radosgw/config-ref.rst b/doc/radosgw/config-ref.rst
index 28f5052e839199cfcd6d867e38f26dd97549cd86..f82ceaa5fe7ae79d712b8ba58ffa5fb2c2e5391d 100644 (file)
--- a/doc/radosgw/config-ref.rst
+++ b/doc/radosgw/config-ref.rst
@@ -982,7 +982,13 @@ Keystone Settings
 
 ``rgw keystone admin token``
 
-:Description: The Keystone admin token (shared secret).
+:Description: The Keystone admin token (shared secret). In Ceph RadosGW
+              authentication with the admin token has priority over
+              authentication with the admin credentials
+              (``rgw keystone admin user``, ``rgw keystone admin password``,
+              ``rgw keystone admin tenant``, ``rgw keystone admin project``,
+              ``rgw keystone admin domain``). Admin token feature is considered
+              as deprecated.
 :Type: String
 :Default: None