Fix missing 'THEME' key
Fix missing 'THEME' key

Change-Id: If1a296c3c9bb1fd7de2effa107d898a482754ed8
Closes-bug: 1603307

noironetworks/horizon,ChameleonCloud/horizon,sandvine/horizon,openstack/horizon,coreycb/horizon,NeCTAR-RC/horizon,BiznetGIO/horizon,ChameleonCloud/horizon,BiznetGIO/horizon,NeCTAR-RC/horizon,coreycb/horizon,ChameleonCloud/horizon,BiznetGIO/horizon,ChameleonCloud/horizon,yeming233/horizon,yeming233/horizon,bac/horizon,openstack/horizon,openstack/horizon,noironetworks/horizon,sandvine/horizon,yeming233/horizon,coreycb/horizon,noironetworks/horizon,NeCTAR-RC/horizon,coreycb/horizon,sandvine/horizon,NeCTAR-RC/horizon,openstack/horizon,yeming233/horizon,noironetworks/horizon,bac/horizon,sandvine/horizon,bac/horizon,bac/horizon,BiznetGIO/horizon