ovn-northd: fix monitor process naming

Currently the ovn-northd monitor process and the ovn-northd process
have the same name, e.g. ps -ef | grep northd shows (edited for space):

    ... ovn-northd --detach --monitor --log-file=ovn-northd.log --pidfile
    ... ovn-northd --detach --monitor --log-file=ovn-northd.log --pidfile

With the call to ovs_cmdl_proctitle_init() added, we have:

    ... ovn-northd: monitoring pid 15662 (healthy)
    ... ovn-northd --detach --monitor --log-file=ovn-northd.log --pidfile

Signed-off-by: Lance Richardson <[email protected]>
Signed-off-by: Ben Pfaff <[email protected]>

ovn/northd/ovn-northd.c

@@ -4913,6 +4913,7 @@ main(int argc, char *argv[])
     bool exiting;
 
     fatal_ignore_sigpipe();
+    ovs_cmdl_proctitle_init(argc, argv);
     set_program_name(argv[0]);
     service_start(&argc, &argv);
     parse_options(argc, argv);