tree 93152b108d367780f22bf966b7e88e9e7def1fe8
author Zack Williams <zdw@opennetworking.org> 1604696346 -0700
committer Zack Williams <zdw@opennetworking.org> 1604944690 -0700

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