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/VERSION b/VERSION
new file mode 100644
index 0000000..c0ab82c
--- /dev/null
+++ b/VERSION
@@ -0,0 +1 @@
+0.0.1-dev