refactor(backend): autostart only at rvd_back launch

script/rvd_back

@@ -180,7 +180,6 @@ sub do_start {
     my $t_refresh = 0;
 
     my $ravada = Ravada->new( %CONFIG );
-    autostart_machines($ravada);
     #    Ravada::Request->enforce_limits();
     #Ravada::Request->refresh_vms();
     for (;;) {
@@ -247,6 +246,7 @@ sub start {
             $vm->id;
         }
         $ravada->_wait_pids();
+        autostart_machines($ravada);
     }
     clean_old_requests();
     for (;;) {