conf: Move boot parsing into a separate function (cherry picked from commit f5456ffd9d7e7b8daadd12b6e9ab03e631d1ea92)
conf: Move boot parsing into a separate function
(cherry picked from commit f5456ffd9d7e7b8daadd12b6e9ab03e631d1ea92)

Signed-off-by: Steve Hodgson <eb20a6615749cf04ff61aa37e18f749ed6d01446@solarflare.com>

sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-