Add github action for acceptance testing (#141)

Co-authored-by: Bram Vogelaar <bram@attachmentgenie.com>

Author: petems

.github/workflows/acceptance.yml

@@ -0,0 +1,17 @@
+on: [push, pull_request]
+name: acceptance tests
+jobs:
+  Linux:
+    strategy:
+      matrix:
+        os: ["ubuntu:latest", "debian:latest", "fedora:latest", "centos:7"]
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+    - name: Run install script 
+      run: |  
+        sudo bash ./install_puppet_7_agent.sh
+    - name: Test puppet is installed
+      run: |
+        /opt/puppetlabs/bin/puppet --version