Initial commit of pxeboot role

- iPXE menu that can be chainloaded
- Memtest and Ubuntu 18.04 targets
- preseed created on a per-serial basis

Change-Id: I6f231ad615025c50963110945a06378936ecf26f
diff --git a/tasks/Debian.yml b/tasks/Debian.yml
new file mode 100644
index 0000000..7c7d5ce
--- /dev/null
+++ b/tasks/Debian.yml
@@ -0,0 +1,13 @@
+---
+# pxeboot tasks/Debian.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+- name: Install unzip to decompress files
+  apt:
+    name:
+      - "unzip"
+    state: "present"
+    update_cache: true
+    cache_valid_time: 3600