Fixed command list

The cliff module expects an array of tuples however
the array that this function was returning was an array
of tuples that was also containing an array of values for
the commands attached to each group and the
cliff module wasn't liking it.

The output now comes out looking like:

| openstack.common | limits show |
|                  | extension list |
| openstack.baremetal.v1 | baremetal set |

Change-Id: Ifa1c149cb5c66ba27dc72bf72d7c8f2f50e42f73
Closes-Bug: 1545609

1 files changed, 18 insertions, 2 deletions

diff --git a/openstackclient/common/module.py b/openstackclient/common/module.py
index a3dea5da..30c67c68 100644
--- a/openstackclient/common/module.py
+++ b/openstackclient/common/module.py
@@ -19,6 +19,7 @@ import six
 import sys
 
 from openstackclient.common import command
+from openstackclient.common import utils
 
 
 class ListCommand(command.Lister):
@@ -29,9 +30,24 @@ class ListCommand(command.Lister):
     def take_action(self, parsed_args):
         cm = self.app.command_manager
         groups = cm.get_command_groups()
-
+        groups = sorted(groups)
         columns = ('Command Group', 'Commands')
-        return (columns, ((c, cm.get_command_names(group=c)) for c in groups))
+
+        commands = []
+        for group in groups:
+            command_names = cm.get_command_names(group)
+            command_names = sorted(command_names)
+
+            if command_names != []:
+
+                # TODO(bapalm): Fix this when cliff properly supports
+                # handling the detection rather than using the hard-code below.
+                if parsed_args.formatter == 'table':
+                    command_names = utils.format_list(command_names, "\n")
+
+                commands.append((group, command_names))
+
+        return (columns, commands)
 
 
 class ListModule(command.ShowOne):