Add workflow for Github Actions

.github/workflow/terraform.yaml

@@ -0,0 +1,24 @@
+---
+name: Terraform
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  terraform:
+    name: Validate Terraform
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup Terraform
+        uses: hashicorp/setup-terraform@v1
+      - name: Terraform Format
+        run: terraform fmt -check -diff
+      - name: Terraform Init
+        run: terraform init
+      - name: Terraform Validate
+        run: terraform validate -no-color