etl: fixed broken dwh api
etl: fixed broken dwh api

ETL will not work since the column name was not correct.

Change-Id: I1b9185888e7a9b20b0d09c2bd1f6d363e6fa1ecb

yingyun001/ovirt-engine,eayun/ovirt-engine,yapengsong/ovirt-engine,eayun/ovirt-engine,walteryang47/ovirt-engine,zerodengxinchao/ovirt-engine,eayun/ovirt-engine,yingyun001/ovirt-engine,derekhiggins/ovirt-engine,derekhiggins/ovirt-engine,eayun/ovirt-engine,yapengsong/ovirt-engine,OpenUniversity/ovirt-engine,Dhandapani/gluster-ovirt,derekhiggins/ovirt-engine,zerodengxinchao/ovirt-engine,yingyun001/ovirt-engine,yapengsong/ovirt-engine,zerodengxinchao/ovirt-engine,yingyun001/ovirt-engine,halober/ovirt-engine,halober/ovirt-engine,zerodengxinchao/ovirt-engine,walteryang47/ovirt-engine,Dhandapani/gluster-ovirt,derekhiggins/ovirt-engine,yapengsong/ovirt-engine,OpenUniversity/ovirt-engine,walteryang47/ovirt-engine,OpenUniversity/ovirt-engine,yingyun001/ovirt-engine,halober/ovirt-engine,eayun/ovirt-engine,yapengsong/ovirt-engine,walteryang47/ovirt-engine,zerodengxinchao/ovirt-engine,OpenUniversity/ovirt-engine,Dhandapani/gluster-ovirt,walteryang47/ovirt-engine,Dhandapani/gluster-ovirt,OpenUniversity/ovirt-engine,halober/ovirt-engine,Dhandapani/gluster-ovirt