Tempest: Fixed a typo
Tempest: Fixed a typo

Change-Id: I03e97fb446431adc1f113327ca54ae523a10602c

vedujoshi/tempest,openstack/tempest,masayukig/tempest,openstack/tempest,Juniper/tempest,Tesora/tesora-tempest,Tesora/tesora-tempest,vedujoshi/tempest,sebrandon1/tempest,Juniper/tempest,masayukig/tempest,sebrandon1/tempest,cisco-openstack/tempest,cisco-openstack/tempest