Merge "KeyMint VTS: ATTEST_KEY has no other purpose" am: a67b0441fe am: 02c4ee0dca am: 35392ef70e am: 6e2b1afdeb

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1844276

Change-Id: Idd7c93ed9a4ad0b36ce06006cef11f0990b7ffcf