Command object docs: server, server image

server
server image

Some cosmetic changes in the command source, sorting classes, help strings, etc.

Change-Id: I3f68dae77b9fe02bc6866684e05aeff943dd9cc3

Author: Dean Troyer

doc/source/command-objects/server-image.rst

@@ -0,0 +1,27 @@
+============
+server image
+============
+
+A server image is a disk image created from a running server instance.  The
+image is created in the Image store.
+
+server image create
+-------------------
+
+Create a new disk image from a running server
+
+.. code:: bash
+
+    os server image create
+        [--name <image-name>]
+        [--wait]
+        <server>
+
+:option:`--name` <image-name>
+    Name of new image (default is server name)
+
+:option:`--wait`
+    Wait for image create to complete
+
+:option:`<server>`
+    Server (name or ID)