Fix bulk device imports with TFTP path enabled

If you bulk imported devices and had the TFTP path set the configuration files would not be written out to the TFTP path.

app/devices/device_imports.php

@@ -357,6 +357,12 @@
 						$database->save($array);
 						//$message = $database->message;
 					}
+				
+					if (strlen($_SESSION['provision']['path']['text']) > 0) {
+						$prov = new provision;
+						$prov->domain_uuid = $domain_uuid;
+						$response = $prov->write();
+					}
 
 				//send the redirect header
 					header("Location: devices.php");