allow port name to be changed on pseudo devices

Netdisco/lib/App/Netdisco/Daemon/Worker/Interactive/PortActions.pm

@@ -71,6 +71,7 @@ sub _set_port_generic {
   my $port = get_port($ip, $pn)
     or return job_error("Unknown port name [$pn] on device [$ip]");
 
+  if ($device->vendor ne 'netdisco') {
       # snmp connect using rw community
       my $info = snmp_connect_rw($ip)
         or return job_error("Failed to connect to device [$ip] to control port");
@@ -93,6 +94,7 @@ sub _set_port_generic {
       if (ref {} ne ref $state or $state->{$iid} ne $data) {
           return job_error("Verify of [$pn] $slot failed on [$ip]");
       }
+  }
 
   # update netdisco DB
   $port->update({$column => $data});