
In order for the `check_for_*` functions to be consumed by `wait_for`, they should notify of their success but not exit. As a consequence, the previous behavior is restored by the fail_unless_* companion functions. With this change, it is now possible to do: wait_for 30 1 check_for_os_service_running keystone Change-Id: I16ddf8913027030c3ccb5487713d172904508fd6