Merge pull request #437 from bastelfreak/ubuntu

Add Ubuntu 22.04 support

Author: SimonHoenscheid

metadata.json

@@ -69,7 +69,8 @@
       "operatingsystem": "Ubuntu",
       "operatingsystemrelease": [
         "18.04",
-        "20.04"
+        "20.04",
+        "22.04"
       ]
     }
   ]