The anaconda deploy interface was saving internal information in
the node's instance_info, in the user-facing 'stage2' and
'ks_template' fields. This broke rebuilds using a different image
with different stage2 or template specified in the image properties.
This has been fixed by saving the information in the node's
driver_internal_info instead.
Addresses comments/nits from
https://review.opendev.org/c/openstack/ironic/+/827924.
Conflict: ironic/common/pxe_utils.py & ironic/drivers/modules/pxe.py
because Node.[set|del]_driver_internal_info() are only avail in
master; changed to copy the dict, make the changes, and then set
the node's driver_internal_info to the updated dict.
Change-Id: Id9428518d21290fb38a0f7471a2cb69a6cb3ffb2
(cherry picked from commit ab68c9d88b)
(cherry picked from commit 42ec7df183)
22e0671aed