Use external vmlinuz/initrd for undercloud
Use external vmlinuz/initrd for undercloud

Requires https://review.openstack.org/#/c/447409
w/a the issue: file '/dev/urandom' is not a supported
random source [code=27 int1=-1]

Signed-off-by: Bogdan Dobrelya <62b3a3e71fe69d786a0eb2bf561b6ce08e31d2cc@mail.ru>

bogdando/oooq-warp