Add password field to set user

Noticed this was missing in set user, the password from parsed
args wasn't being passed in.

Change-Id: I0eb748444b86b374265b6e1dd02f69a922a9b043

Author: Steve Martinelli

openstackclient/identity/v3/user.py

@@ -311,6 +311,8 @@ def take_action(self, parsed_args):
             kwargs['name'] = parsed_args.name
         if parsed_args.email:
             kwargs['email'] = parsed_args.email
+        if parsed_args.password:
+            kwargs['password'] = parsed_args.password
         if parsed_args.description:
             kwargs['description'] = parsed_args.description
         if parsed_args.project: