Comment 7 for bug 1543841

Looks like this problem was caused by:
https://review.openstack.org/#/c/262752/

So the following change in Tempest works:

diff --git a/tempest/cmd/verify_tempest_config.py b/tempest/cmd/verify_tempest_config.py
index 92aa19e..6de8b08 100644
--- a/tempest/cmd/verify_tempest_config.py
+++ b/tempest/cmd/verify_tempest_config.py
@@ -390,6 +390,7 @@ class TempestVerifyConfig(command.Command):

     def get_parser(self, prog_name):
         parser = super(TempestVerifyConfig, self).get_parser(prog_name)
+ parser.allow_abbrev = True
         _parser_add_args(parser)
         return parser