add doc for group command

Change-Id: Iaaa0aeb42f9f940af63863f5d09011b5f7529281

Author: wanghonghw

doc/source/command-objects/group.rst

@@ -0,0 +1,192 @@
+=====
+group
+=====
+
+Identity v3
+
+group add user
+--------------
+
+Add user to group
+
+.. program:: group add user
+.. code:: bash
+
+    os group add user
+        <group>
+        <user>
+
+.. option:: <group>
+
+    Group that user will be added to (name or ID)
+
+.. option:: <user>
+
+    User to add to group (name or ID)
+
+group contains user
+-------------------
+
+Check user in group
+
+.. program:: group contains user
+.. code:: bash
+
+    os group contains user
+        <group>
+        <user>
+
+.. option:: <group>
+
+    Group to check if user belongs to (name or ID)
+
+.. option:: <user>
+
+   User to check (name or ID)
+
+group create
+------------
+
+Create new group
+
+.. program:: group create
+.. code:: bash
+
+    os group create
+        [--domain <domain>]
+        [--description <description>]
+        [--or-show]
+        <group-name>
+
+.. option:: --domain <domain>
+
+    References the domain ID or name which owns the group
+
+.. option:: --description <description>
+
+    New group description
+
+.. option:: --or-show
+
+    Return existing group
+
+    If the group already exists, return the existing group data and do not fail.
+
+.. option:: <group-name>
+
+    New group name
+
+group delete
+------------
+
+Delete group
+
+.. program:: group delete
+.. code:: bash
+
+    os group delete
+        [--domain <domain>]
+        <group> [<group> ...]
+
+.. option:: --domain <domain>
+
+    Domain where group resides (name or ID)
+
+.. option:: <group>
+
+    Group(s) to delete (name or ID)
+
+group list
+----------
+
+List groups
+
+.. program:: group list
+.. code:: bash
+
+    os group list
+        [--domain <domain>]
+        [--user <user>]
+        [--long]
+
+.. option:: --domain <domain>
+
+    Filter group list by <domain> (name or ID)
+
+.. option:: --user <user>
+
+    List group memberships for <user> (name or ID)
+
+.. option:: --long
+
+    List additional fields in output (defaults to false)
+
+group remove user
+-----------------
+
+Remove user from group
+
+.. program:: group remove user
+.. code:: bash
+
+    os group remove user
+        <group>
+        <user>
+
+.. option:: <group>
+
+    Group that user will be removed from (name or ID)
+
+.. option:: <user>
+
+    User to remove from group (name or ID)
+
+group set
+---------
+
+Set group properties
+
+.. program:: group set
+.. code:: bash
+
+    os group set
+        [--name <name>]
+        [--domain <domain>]
+        [--description <description>]
+        <group>
+
+.. option:: --name <name>
+
+    New group name
+
+.. option:: --domain <domain>
+
+    New domain that will now own the group (name or ID)
+
+.. option:: --description <description>
+
+    New group description
+
+.. option:: <group>
+
+    Group to modify (name or ID)
+
+group show
+----------
+
+Show group details
+
+.. program:: group show
+.. code:: bash
+
+    os group show
+        [--domain <domain>]
+        <group>
+
+.. option:: --domain <domain>
+
+    Domain where group resides (name or ID)
+
+.. option:: <group>
+
+    Group to display (name or ID)

openstackclient/identity/v3/group.py

@@ -39,12 +39,12 @@ def get_parser(self, prog_name):
         parser.add_argument(
             'group',
             metavar='<group>',
-            help='Group name or ID that user will be added to',
+            help='Group that user will be added to (name or ID)',
         )
         parser.add_argument(
             'user',
             metavar='<user>',
-            help='User name or ID to add to group',
+            help='User to add to group (name or ID)',
         )
         return parser
 
@@ -68,7 +68,7 @@ def take_action(self, parsed_args):
 
 
 class CheckUserInGroup(command.Command):
-    """Checks that user is in a specific group"""
+    """Check user in group"""
 
     log = logging.getLogger(__name__ + '.CheckUserInGroup')
 
@@ -77,12 +77,12 @@ def get_parser(self, prog_name):
         parser.add_argument(
             'group',
             metavar='<group>',
-            help='Group name or ID that user will be added to',
+            help='Group to check if user belongs to (name or ID)',
         )
         parser.add_argument(
             'user',
             metavar='<user>',
-            help='User name or ID to add to group',
+            help='User to check (name or ID)',
         )
         return parser
 
@@ -106,7 +106,7 @@ def take_action(self, parsed_args):
 
 
 class CreateGroup(show.ShowOne):
-    """Create group command"""
+    """Create new group"""
 
     log = logging.getLogger(__name__ + '.CreateGroup')
 
@@ -118,11 +118,11 @@ def get_parser(self, prog_name):
             help='New group name')
         parser.add_argument(
             '--description',
-            metavar='<group-description>',
+            metavar='<description>',
             help='New group description')
         parser.add_argument(
             '--domain',
-            metavar='<group-domain>',
+            metavar='<domain>',
             help='References the domain ID or name which owns the group')
         parser.add_argument(
             '--or-show',
@@ -268,12 +268,12 @@ def get_parser(self, prog_name):
         parser.add_argument(
             'group',
             metavar='<group>',
-            help='Group name or ID that user will be removed from',
+            help='Group that user will be removed from (name or ID)',
         )
         parser.add_argument(
             'user',
             metavar='<user>',
-            help='User name or ID to remove from group',
+            help='User to remove from group (name or ID)',
         )
         return parser
 
@@ -297,7 +297,7 @@ def take_action(self, parsed_args):
 
 
 class SetGroup(command.Command):
-    """Set group command"""
+    """Set group properties"""
 
     log = logging.getLogger(__name__ + '.SetGroup')
 
@@ -306,18 +306,18 @@ def get_parser(self, prog_name):
         parser.add_argument(
             'group',
             metavar='<group>',
-            help='Name or ID of group to change')
+            help='Group to modify (name or ID)')
         parser.add_argument(
             '--name',
-            metavar='<new-group-name>',
+            metavar='<name>',
             help='New group name')
         parser.add_argument(
             '--domain',
-            metavar='<group-domain>',
-            help='New domain name or ID that will now own the group')
+            metavar='<domain>',
+            help='New domain that will now own the group (name or ID)')
         parser.add_argument(
             '--description',
-            metavar='<group-description>',
+            metavar='<description>',
             help='New group description')
         return parser
 
@@ -341,7 +341,7 @@ def take_action(self, parsed_args):
 
 
 class ShowGroup(show.ShowOne):
-    """Show group command"""
+    """Show group details"""
 
     log = logging.getLogger(__name__ + '.ShowGroup')
 
@@ -350,7 +350,7 @@ def get_parser(self, prog_name):
         parser.add_argument(
             'group',
             metavar='<group>',
-            help='Name or ID of group to display',
+            help='Group to display (name or ID)',
         )
         parser.add_argument(
             '--domain',