maint: Add Support for RHEL8

CHANGELOG.md

@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- Support RHEL8 and CentOS 8
+
 ### Changed
 - Update structure to work with latest puppet version
 

metadata.json

@@ -16,7 +16,8 @@
       "operatingsystemrelease": [
         "5",
         "6",
-        "7"
+        "7",
+        "8"
       ]
     },
     {
@@ -24,7 +25,8 @@
       "operatingsystemrelease": [
         "5",
         "6",
-        "7"
+        "7",
+        "8"
       ]
     },
     {