doc: Added admin tasks page for ceph-deploy.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>

diff --git a/doc/rados/deployment/ceph-deploy-admin.rst b/doc/rados/deployment/ceph-deploy-admin.rst
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+=============
+ Admin Tasks
+=============
+
+Once you have set up a cluster with ``ceph-deploy``, you may 
+provide the client admin key and the Ceph configuration file
+to another host so that a user on the host may use the ``ceph``
+command line as an administrative user.
+
+
+Create an Admin Host
+====================
+
+To enable a host to execute ceph commands with administrator
+priveleges, use the ``admin`` command. ::
+
+       ceph-deploy admin {host-name [host-name]...}
+       
+
+Deploy Config File
+==================
+
+To send an updated copy of the Ceph configuration file to hosts
+in your cluster, use the ``config`` command. ::
+
+       ceph-deploy config {host-name [host-name]...}
+       
+.. tip:: With a base name and increment host-naming convention, 
+   it is easy to deploy configuration files via simple scripts
+   (e.g., ``ceph-deploy config hostname{1,2,3,4,5}``).
+