Issue: https://github.com/scylladb/scylla/issues/1594 Currently systemd run first housekeeping check at the end of first timer period. We expected it to be run right after start. This patch makes systemd to be consistent with upstart. Signed-off-by: Amos Kong <amos@scylladb.com> Message-Id: <4cc880d509b0a7b283278122a70856e21e5f1649.1471433388.git.amos@scylladb.com>