Merge "Return OUT_OF_KEYS if system is rkp only" am: 8e95c7ce03

Original change: https://android-review.googlesource.com/c/platform/system/security/+/2048944

Change-Id: I7be51cc5b7664f40ae7ffbb9df73833050306da0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>