Fix saving/loading of settings files on server processes.

All server processes, including satellites in batch mode, were reading
and saving settings files. That was incorrect. The settings files need
to processed only on client processes. In symmetric batch mode too, we
read the file on the root node and then distribute it to everyone. This
commit fixes this logic.

Change-Id: I7835f3c1ccc7eb8369ec4cf14ba7d838ee7ee2b6
Merge topic 'fix_settings_server_processes' into next

e5e547a5 Fix saving/loading of settings files on server processes.