To share systemd unit file between Fedora/CentOS and Ubuntu, generate systemd unit file on building time since Fedora/CentOS and Ubuntu has sysconfdir on different place. Signed-off-by: Takuya ASADA <syuu@scylladb.com> Message-Id: <1459779957-11007-1-git-send-email-syuu@scylladb.com>