Fixed minor errors in Sahara DB comments
Fixed minor errors in Sahara DB comments

Change-Id: I890a3965aa9d008bbd240664395aecc863d5a5fe

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