Fixed potential unbound varialble errors on test failures.
Fixed potential unbound varialble errors on test failures.

Change-Id: Ifaeec5b4c84ac244acdcd99b87ce95293ffb149d

Juniper/tempest,redhat-cip/tempest,Mirantis/tempest,CiscoSystems/tempest,alinbalutoiu/tempest,zsoltdudas/lis-tempest,eggmaster/tempest,JioCloud/tempest,LIS/lis-tempest,bigswitch/tempest,tonyli71/tempest,flyingfish007/tempest,adkerr/tempest,pczerkas/tempest,JioCloud/tempest,pandeyop/tempest,citrix-openstack/build-tempest,akash1808/tempest,Juraci/tempest,manasi24/tempest,masayukig/tempest,itskewpie/tempest,afaheem88/tempest_neutron,cisco-openstack/tempest,neerja28/Tempest,rzarzynski/tempest,citrix-openstack-build/tempest,sebrandon1/tempest,LIS/lis-tempest,tudorvio/tempest,ebagdasa/tempest,pandeyop/tempest,jamielennox/tempest,danielmellado/tempest,armando-migliaccio/tempest,tudorvio/tempest,ebagdasa/tempest,izadorozhna/tempest,Juraci/tempest,afaheem88/tempest_neutron,NexusIS/tempest,cloudbase/lis-tempest,dkalashnik/tempest,openstack/tempest,manasi24/jiocloud-tempest-qatempest,dkalashnik/tempest,jaspreetw/tempest,Vaidyanath/tempest,openstack/tempest,yamt/tempest,pczerkas/tempest,rakeshmi/tempest,vedujoshi/os_tempest,neerja28/Tempest,zsoltdudas/lis-tempest,sebrandon1/tempest,BeenzSyed/tempest,redhat-cip/tempest,Vaidyanath/tempest,afaheem88/tempest,vedujoshi/tempest,xbezdick/tempest,jamielennox/tempest,Tesora/tesora-tempest,vedujoshi/os_tempest,Juniper/tempest,NexusIS/tempest,citrix-openstack-build/tempest,varunarya10/tempest,roopali8/tempest,xbezdick/tempest,vmahuli/tempest,Mirantis/tempest,nunogt/tempest,manasi24/tempest,Tesora/tesora-tempest,vedujoshi/tempest,queria/my-tempest,FujitsuEnablingSoftwareTechnologyGmbH/tempest,danielmellado/tempest,adkerr/tempest,Lilywei123/tempest,hpcloud-mon/tempest,FujitsuEnablingSoftwareTechnologyGmbH/tempest,Lilywei123/tempest,yamt/tempest,akash1808/tempest,cloudbase/lis-tempest,rzarzynski/tempest,itskewpie/tempest,ntymtsiv/tempest,eggmaster/tempest,hayderimran7/tempest,rakeshmi/tempest,jaspreetw/tempest,citrix-openstack/build-tempest,afaheem88/tempest,bigswitch/tempest,armando-migliaccio/tempest,hpcloud-mon/tempest,nunogt/tempest,hayderimran7/tempest,queria/my-tempest,varunarya10/tempest,roopali8/tempest,BeenzSyed/tempest,masayukig/tempest,manasi24/jiocloud-tempest-qatempest,cisco-openstack/tempest,ntymtsiv/tempest,flyingfish007/tempest,vmahuli/tempest,izadorozhna/tempest,CiscoSystems/tempest,alinbalutoiu/tempest,tonyli71/tempest