Before a7a3658 the rbdmap script was logging bogus messages and not working
on systemd platforms because the unit file was not defining the RBDMAPFILE
environment variable.
This workunit asserts that the bug has been fixed.
http://tracker.ceph.com/issues/14984 References: #14984
Signed-off-by: Nathan Cutler <ncutler@suse.com>
