dist/docker: Add missing "hostname" package
dist/docker: Add missing "hostname" package

The Fedora base image has changed so we need to add "hostname" that's
used by the Docker-specific launch script to our image.

Fixes Scylla startup.

Signed-off-by: Pekka Enberg <add4fcd06328a394f0ad91feda7ee057316dc5ed@scylladb.com>

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