(GH-107) Add puppet 8 support (#108)

Adds puppet 8 support

Author: TraGicCode

metadata.json

@@ -61,7 +61,7 @@
   "requirements": [
     {
       "name": "puppet",
-      "version_requirement": ">= 6.0.0 < 8.0.0"
+      "version_requirement": ">= 6.0.0 < 9.0.0"
     }
   ],
   "tags": [