device: Update Cumulus Support (#8626)

* Enhance Cumulus Support 001

* Enhance Cumulus Support 002

* Enhance Cumulus Support 003

* removed mibs

* Added test data

* Update cumulus.inc.php

* Update cumulus.inc.php

includes/polling/os/cumulus.inc.php

@@ -0,0 +1,26 @@
+<?php
+/**
+ * cumulus.inc.php
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @package    LibreNMS
+ * @copyright  2018 Ryan Finney
+ * @author     https://github.com/theherodied/
+ */
+
+$data = snmp_getnext_multi($device, 'entPhysicalDescr entPhysicalSoftwareRev entPhysicalSerialNum', '-OQUs', 'ENTITY-MIB');
+$hardware = $data['entPhysicalDescr'];
+$serial = $data['entPhysicalSerialNum'];
+$version = preg_replace('/^Cumulus Linux /', '', $data['entPhysicalSoftwareRev']);