nova-libvirt: add package qemu-efi to support uefi image
nova-libvirt: add package qemu-efi to support uefi image

On arm64, uefi image is usually used via --property hw_firmware_type=uefi
In order to support this, qemu-efi has to be installed
Ohterwise error reports:
Terminating instance: libvirtError: Failed to open file '/usr/share/AAVMF/AAVMF_VARS.fd': No such file or directory

Change-Id: Ibc1b39e821e84fb9739833be04bdb41db59d2ff5
Signed-off-by: Kevin Zhao <9fc648be98fc18cb4028b7c8c8516da572477616@linaro.org>
Signed-off-by: Zhangfei Gao <b1f7e1a0ab5f2fe9a6663bef87918f01828cf598@linaro.org>

stackforge/kolla,stackforge/kolla,nihilifer/kolla,openstack/kolla,rahulunair/kolla,nihilifer/kolla,stackforge/kolla,rahulunair/kolla,openstack/kolla