[osp9] volume_services option for tempest
[osp9] volume_services option for tempest

volume_services option exists in tempest to be able to work with
older buggy version of openstack, but it must set to `true` in
case the test system is mitaka or newer, in since newton version
of tempest the new behavior is the default, so no explicit option is
required.

Related failing test case:
tempest.api.volume.admin.test_volume_services.VolumesServicesV2TestJSON.test_get_service_by_host_name

Change-Id: Id01dd71b4feade57edfcb44fb3dd2c24016121ef

redhat-openstack/infrared,redhat-openstack/infrared,redhat-openstack/infrared