Add missing dependent module gettextutils

gettextutils was used in novaclient, but wasn't recorded.
This patch also let the modules in alphabetical order.

Change-Id: I725c3e8be126b8acd5e42ccaca776f57235ecdc7

openstack-common.conf

@@ -1,15 +1,16 @@
 [DEFAULT]
 
-# The list of modules to copy from openstack-common
+# The list of modules to copy from oslo-incubator
+module=apiclient
+module=cliutils
+module=gettextutils
 module=install_venv_common
+module=importutils
 module=jsonutils
+module=network_utils
 module=strutils
 module=timeutils
 module=uuidutils
-module=apiclient
-module=importutils
-module=cliutils
-module=network_utils
 
 # The base module to hold the copy of openstack.common
 base=novaclient