Fix multiworker changes

Multiworker commit broke deploys of OC4 on Ubuntu 14.04 nodes,
because the Ubuntu 14.04 does not have systemd init.

To be safe we are now using config_only, to decide if the
restart of services is needed.

PROD-18175

Change-Id: I8260208e1e30891506b8c7981e3244d123f0dce3
1 file changed