cryptohome: check Verify result in tpm-manager for TPM2

tpm-manager verify_endorsement should not only check the status
code of VerifyReply message, but also the verified flag.

BUG=chrome-os-partner:57944
TEST=run 'tpm_manager verify_endorsement'; same with imitated failure

Change-Id: Id89b18f14c161b4bb8121bb3b30b8115b5347975
Reviewed-on: https://chromium-review.googlesource.com/415474
Commit-Ready: Andrey Pronin <apronin@chromium.org>
Tested-by: Andrey Pronin <apronin@chromium.org>
Reviewed-by: Mattias Nissler <mnissler@chromium.org>
1 file changed