Fixes#4
Because start_qemu.sh references OVMF.fd, it is convenient for OVMF.fd
to live alongside that script for ease of use.
Note that this version of OVMF.fd is a copy of /usr/share/qemu/OVMF.fd
in Clear Linux OS builds 22930 and newer from the edk2 package
(edk2-2-8, built using the recent UDK2018 release).
Signed-off-by: Patrick McCarty <patrick.mccarty@intel.com>