dist/common/scripts/scylla_setup: show restart message when SELinux was disabled on the script
dist/common/scripts/scylla_setup: show restart message when SELinux was disabled on the script

Disabling SELinux requires server restart, so warn user to restart before
running Scylla.

Signed-off-by: Takuya ASADA <4ebfb6f510af412d6e89fefa3ab96d9c8b5e3fff@scylladb.com>
Message-Id: <1485817393-25919-2-git-send-email-4ebfb6f510af412d6e89fefa3ab96d9c8b5e3fff@scylladb.com>

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