trusty: keymint: explicitly set the app name. am: d855ac8693

Original change: https://android-review.googlesource.com/c/trusty/app/keymint/+/2928270

Change-Id: I64a294dd09f4056853b44b4d0118649f3205a0a3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>