Merge pull request #328 from bastelfreak/ubuntu

Add Ubuntu 22.04 support

Author: bastelfreak

metadata.json

@@ -60,7 +60,8 @@
       "operatingsystem": "Ubuntu",
       "operatingsystemrelease": [
         "18.04",
-        "20.04"
+        "20.04",
+        "22.04"
       ]
     },
     {