Fix incorrect s/oslo/sahara/ in _i18n
Fix incorrect s/oslo/sahara/ in _i18n

Change-Id: I0ae7dcf935a978c708651fa8f509ae510f7e56c4

esikachev/sahara-backup,esikachev/scenario,henaras/sahara,zhujzhuo/Sahara,crobby/sahara,zhangjunli177/sahara,esikachev/sahara-backup,ekasitk/sahara,zhangjunli177/sahara,henaras/sahara,egafford/sahara,esikachev/scenario,crobby/sahara,bigfootproject/sahara,redhat-openstack/sahara,zhujzhuo/Sahara,egafford/sahara,openstack/sahara,tellesnobrega/sahara,matips/iosr-2015,redhat-openstack/sahara,zhangjunli177/sahara,matips/iosr-2015,henaras/sahara,crobby/sahara,esikachev/sahara-backup,zhujzhuo/Sahara,ekasitk/sahara,bigfootproject/sahara,esikachev/scenario,redhat-openstack/sahara,ekasitk/sahara,bigfootproject/sahara,tellesnobrega/sahara,openstack/sahara,matips/iosr-2015