Do not automatically restart NM after static configuration

NM changes happen at runtime and automatically restarting it just wastes
time and introduces more options to fail without providing any benefit.

Related issue: https://progress.opensuse.org/issues/169531

lib/mm_network.pm

@@ -228,7 +228,10 @@ sub setup_static_mm_network {
     configure_static_ip(ip => $ip, is_nm => $is_nm);
     configure_default_gateway(is_nm => $is_nm);
     configure_static_dns(get_host_resolv_conf(), is_nm => $is_nm);
-    restart_networking(is_nm => $is_nm);
+    # Previous functions apply NM settings at runtime and no restart is required to apply them.
+    # Tracking if a restart is required troughout these functions would be cleaner but given their current implementation
+    # we can get away with not restarting if using NM.
+    restart_networking(is_nm => $is_nm) unless $is_nm;
 }
 
 sub restart_networking {