This sets lowest realtime priority which still takes precedence over any non-realtime service.
Related: OS#5687
Change-Id: Ib1705a164b04b876f129a17c4e8353b9ddcc538e
By default systemd will execute service with root directory (or home directory for user instance) which might result in
attempts to create files in unexpected place. Let's set it to 'osmocom' subdir of state directory (/var/lib for system instance) instead.
Related: OS#4821
Change-Id: I7696cd92953787591e7b4777ee79c2671326b972