Initial commit of unbound role

Change-Id: I0a5f1517e7912d418b7994e17c856338e07a5ae0
diff --git a/tasks/Debian.yml b/tasks/Debian.yml
new file mode 100644
index 0000000..db8a3bb
--- /dev/null
+++ b/tasks/Debian.yml
@@ -0,0 +1,12 @@
+---
+# unbound tasks/Debian.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+- name: Install unbound packages (Debian)
+  apt:
+    name: "unbound"
+    state: "present"
+    update_cache: true
+    cache_valid_time: 3600