anaconda: ks liveimg = instance_info/image_info
anaconda: ks liveimg = instance_info/image_info

Fix typo. For anaconda deploy interface, ironic sets the
kickstart 'liveimg' command with the URL from the ironic node's
instance_info's "image_url" value [1], and that "image_url"
value is added by ironic code, using the "image_info" value.
We don't have code that uses any "liveimg_url" value.

[1] https://opendev.org/openstack/ironic/src/commit/
3d3a67daf7d2969d8da691d12351ab5bb32eca80/ironic/common/
pxe_utils.py#L1003

Change-Id: Ic8ce5fa83768c2632eb190cd87dbf81062c7083a

openstack/ironic,openstack/ironic