dist/common/scripts/scylla_ntp_setup: fix gentoo linux systemd service name
dist/common/scripts/scylla_ntp_setup: fix gentoo linux systemd service name

fix typo as ntpd package systemd service is named ntpd, not sntpd

Signed-off-by: Alexys Jacob <ee25f2b26a23c85eb2940a5214ecb1801c877d19@gentoo.org>
Message-Id: <20181002123802.5576-1-ee25f2b26a23c85eb2940a5214ecb1801c877d19@gentoo.org>

scylladb/scylla,avikivity/scylla,avikivity/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla