Add AlmaLinux/Rocky support

Author: bastelfreak

metadata.json

@@ -8,6 +8,18 @@
   "project_page": "https://github.com/voxpupuli/puppet-unbound",
   "issues_url": "https://github.com/voxpupuli/puppet-unbound/issues",
   "operatingsystem_support": [
+    {
+      "operatingsystem": "AlmaLinux",
+      "operatingsystemrelease": [
+        "8"
+      ]
+    },
+    {
+      "operatingsystem": "Rocky",
+      "operatingsystemrelease": [
+        "8"
+      ]
+    },
     {
       "operatingsystem": "RedHat",
       "operatingsystemrelease": [