feat: linter action + dependabot (#5)

Author: vthiery

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: daily

.github/workflows/lint.yml

@@ -0,0 +1,23 @@
+name: Lint
+
+on: [push, pull_request]
+jobs:
+  lint:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        terraform-versions: [1.1.x]
+    steps:
+      - name: Checkout
+        uses: actions/[email protected]
+
+      - name: Setup Terraform
+        uses: hashicorp/[email protected]
+        with:
+          terraform_version: ${{ matrix['terraform-versions'] }}
+          terraform_wrapper: false
+
+      - name: Terraform fmt
+        id: fmt
+        run: terraform fmt -check

README.md

@@ -8,12 +8,11 @@ In particular:
 - Optionally, it creates a user named after the database when not specified.
 - Optionally, it creates two roles to obtain credentials via Vault:
 
-    - `${vault_backend_path}/${DBNAME}-all-privileges` with `ALL PRIVILEGES` permissions.
-    - `${vault_backend_path}/${DBNAME}-read-only` with `SELECT` permissions.
+  - `${vault_backend_path}/${DBNAME}-all-privileges` with `ALL PRIVILEGES` permissions.
+  - `${vault_backend_path}/${DBNAME}-read-only` with `SELECT` permissions.
 
 - When the intent is to use Vault, it's recommended to **NOT** provide the `plaintext_password`.
 
-
 ## Usage
 
 ```hcl
@@ -35,5 +34,6 @@ module "my_database" {
   # Optional
   vault_backend_path       = "mysql/my-cluster"
   vault_db_connection_name = "my-cluster"
+  vault_role_default_ttl   = 3600
 }
 ```