Group show command should be in V3

Group feature was introduced in Cinder V3, So the command should
be there as well. But the "group show" command is in V2 which is
wrong.

Change-Id: If3ba44b2b188607542bdadfeb58f8e4b363837b7
Closes-bug: #1663496

cinderclient/v2/shell.py

@@ -2129,19 +2129,6 @@ def do_consisgroup_show(cs, args):
     utils.print_dict(info)
 
 
-@utils.arg('group',
-           metavar='<group>',
-           help='Name or ID of a group.')
-def do_group_show(cs, args):
-    """Shows details of a group."""
-    info = dict()
-    group = shell_utils.find_group(cs, args.group)
-    info.update(group._info)
-
-    info.pop('links', None)
-    utils.print_dict(info)
-
-
 @utils.arg('volumetypes',
            metavar='<volume-types>',
            help='Volume types.')

cinderclient/v3/shell.py

@@ -762,6 +762,20 @@ def do_group_list(cs, args):
     utils.print_list(groups, columns)
 
 
+@api_versions.wraps('3.13')
+@utils.arg('group',
+           metavar='<group>',
+           help='Name or ID of a group.')
+def do_group_show(cs, args):
+    """Shows details of a group."""
+    info = dict()
+    group = shell_utils.find_group(cs, args.group)
+    info.update(group._info)
+
+    info.pop('links', None)
+    utils.print_dict(info)
+
+
 @api_versions.wraps('3.13')
 @utils.arg('grouptype',
            metavar='<group-type>',