Use mlxbf-bootctl to update boot partition in bfinst
Use mlxbf-bootctl to update boot partition in bfinst

This commit changes to use mlxbf-bootctl to update boot
partition when calling bfrec in bfinst. Previously
it uses capsule upgrade which relies on the old boot
images to be working and compatible with latest FW.

Mellanox/bfscripts,Mellanox/bfscripts