Update Horizon's example local.conf
Update Horizon's example local.conf

Change-Id: I82b65ef2334ce94d39c063d278e457026606ccd9
Closes-bug: 1638051

yeming233/horizon,yeming233/horizon,openstack/horizon,ChameleonCloud/horizon,openstack/horizon,ChameleonCloud/horizon,ChameleonCloud/horizon,BiznetGIO/horizon,BiznetGIO/horizon,NeCTAR-RC/horizon,ChameleonCloud/horizon,openstack/horizon,NeCTAR-RC/horizon,NeCTAR-RC/horizon,noironetworks/horizon,openstack/horizon,noironetworks/horizon,NeCTAR-RC/horizon,BiznetGIO/horizon,noironetworks/horizon,yeming233/horizon,BiznetGIO/horizon,noironetworks/horizon,yeming233/horizon