scylla_ntp_setup: switch to distro package
scylla_ntp_setup: switch to distro package

Use distro API to simplify distribution detection.

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