(GH-114) Update supported os (#117)

Closes #114

Author: TraGicCode

metadata.json

@@ -14,7 +14,8 @@
     {
       "operatingsystem": "CentOS",
       "operatingsystemrelease": [
-        "7"
+        "7",
+        "8"
       ]
     },
     {
@@ -26,7 +27,9 @@
     {
       "operatingsystem": "RedHat",
       "operatingsystemrelease": [
-        "7"
+        "7",
+        "8",
+        "9"
       ]
     },
     {
@@ -38,13 +41,16 @@
     {
       "operatingsystem": "Debian",
       "operatingsystemrelease": [
-        "8"
+        "10",
+        "11"
       ]
     },
     {
       "operatingsystem": "Ubuntu",
       "operatingsystemrelease": [
-        "16.04"
+        "18.04",
+        "20.04",
+        "22.04"
       ]
     },
     {