dist: support RHEL on scylla_install
dist: support RHEL on scylla_install

Signed-off-by: Takuya ASADA <4ebfb6f510af412d6e89fefa3ab96d9c8b5e3fff@scylladb.com>

duarten/scylla,duarten/scylla,raphaelsc/scylla,scylladb/scylla,kjniemi/scylla,avikivity/scylla,kjniemi/scylla,scylladb/scylla,raphaelsc/scylla,avikivity/scylla,raphaelsc/scylla,duarten/scylla,kjniemi/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla