Updated device cache support (#10795)

* Device Cache
also some additional device related models

* attribs from cache

* replace common attribute functions

* remove legacy cache usage
tidy up some collection manipulation
remove some unused or single use functions

* cleanup some items

* always return a device, to prevent bugs

* clear device cache when testing after each test

* fix double assignment

* Clean up function to take advantage of null object

tests/OSModulesTest.php

@@ -25,6 +25,7 @@
 
 namespace LibreNMS\Tests;
 
+use DeviceCache;
 use LibreNMS\Config;
 use LibreNMS\Exceptions\FileNotFoundException;
 use LibreNMS\Exceptions\InvalidModuleException;
@@ -132,6 +133,8 @@ class OSModulesTest extends DBTestCase
                 . "\nOS $os: Polled $module data does not match that found in $filename"
             );
         }
+
+        DeviceCache::flush(); // clear cached devices
     }
 
     public function dumpedDataProvider()