Initial commit of MariaDB role

Change-Id: I8d35374da716712ecf0ab1f748c952cbc2635969
diff --git a/molecule/default/prepare.yml b/molecule/default/prepare.yml
new file mode 100644
index 0000000..fb8f1ed
--- /dev/null
+++ b/molecule/default/prepare.yml
@@ -0,0 +1,15 @@
+---
+# mariadb molecule/default/prepare.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+- name: Prepare
+  hosts: all
+
+  pre_tasks:
+    - name: Install GPG to support adding apt repo keys
+      apt:
+        name: "gpg"
+        state: "present"
+        update_cache: true