Kristian Klausen authored Feb 23, 2020 and Christian Rebischke committed Feb 24, 2020

Disabling it by masking 99-default.link works, but it "breaks":
udevadm test-builtin net_setup_link, as a default link configuration
isn't created. Breaking net_setup_link breaks cloud-init, which means
the cloud image doesn't work.
So with this commit we disable it the same way as Debian does[1], by
adding "net.ifnames=0" to the kernels command line.

See also #30

[1] https://salsa.debian.org/openstack-team/debian/openstack-debian-images/blob/fb1d5be0b84895c96f8209f6e7177cf1f6bf1b25/build-openstack-debian-image#L1861

Signed-off-by: Kristian Klausen <kristian@klausen.dk>