udev-rules: add 80-net-name-slot.rules
dracut-initqueue.service: Fix systemd start condition

Scripts in dracut initqueue hooks are placed under
/usr/lib/dracut/hooks/initqueue/*/ directory.

And also start initqueue service when kernel cmdline has
rd.break=initqueue

Signed-off-by: WANG Chao <chaowang@redhat.com>
TODO: update