Use snponly.efi instead of ipxe.efi for UEFI boot
Use snponly.efi instead of ipxe.efi for UEFI boot

ipxe.efi uses iPXE network card drivers; at least Dell PowerEdge
Haswell NIC's don't work correctly with it. snponly.efi is the UEFI
equivalent of undionly.kpxe for legacy BIOS, and uses the builtin NIC
driver. Which seems to work.

CSC-IT-Center-for-Science/ansible-role-pxe_config,CSC-IT-Center-for-Science/ansible-role-pxe_config