lxd/instance/drivers/driver/qemu/templates: Use static PCIe address prefix for 9p devices
lxd/instance/drivers/driver/qemu/templates: Use static PCIe address prefix for 9p devices

Uses 0x3.0x as address prefix to avoid qemu auto generating the address and causing conflicts when ordering means they are added in between NICs being added.

Signed-off-by: Thomas Parrott <6b778ce645fb0e3dde76d79eccad490955b1ae74@canonical.com>

Skarlso/lxd,hallyn/lxd,mjeanson/lxd,atxwebs/lxd,lxc/lxd,mjeanson/lxd,atxwebs/lxd,hallyn/lxd,mjeanson/lxd,stgraber/lxd,lxc/lxd,Skarlso/lxd,atxwebs/lxd,atxwebs/lxd,hallyn/lxd,hallyn/lxd,lxc/lxd,lxc/lxd,stgraber/lxd,hallyn/lxd,stgraber/lxd,hallyn/lxd,stgraber/lxd,lxc/lxd,Skarlso/lxd,stgraber/lxd,Skarlso/lxd,lxc/lxd,stgraber/lxd,lxc/lxd,stgraber/lxd