LA-356 Do not take the BUILD_TAG literally
LA-356 Do not take the BUILD_TAG literally

We should interpret BUILD_TAG and set that as a var, instead of
setting ${BUILD_TAG} as a var. Else we won't have he proper info.

hughsaunders/rpc-openstack,jacobwagner/rpc-openstack,galstrom21/rpc-openstack,major/rpc-openstack,major/rpc-openstack,BjoernT/rpc-openstack,mancdaz/rpc-openstack,prometheanfire/rpc-openstack,prometheanfire/rpc-openstack,git-harry/rpc-openstack,hughsaunders/rpc-openstack,rcbops/rpc-openstack,rcbops/rpc-openstack,BjoernT/rpc-openstack,cloudnull/rpc-openstack,galstrom21/rpc-openstack,robb-romans/rpc-openstack,jacobwagner/rpc-openstack,robb-romans/rpc-openstack,cloudnull/rpc-openstack,git-harry/rpc-openstack,mancdaz/rpc-openstack