cryptohome, attestation: add IFX CA 50 to known CAs

Add IFX TPM EK Intermediate CA 50 to the list of known certification
authorities for verifying cros-core endorsement certificates.

TEST="tpm-manager verify_endorsement --cros_core" succeeds on a device
     with the TPM that has EKcert signed by this CA

Change-Id: I81084547355a039000bb153295e77f74a24dc85c
Commit-Ready: Andrey Pronin <>
Tested-by: Hung-Te Lin <>
Reviewed-by: Hung-Te Lin <>
(cherry picked from commit 2ee6d9afc9a994324561ca1423546c64a21c59b4)
Reviewed-by: Chinyue Chen <>
Commit-Queue: Chinyue Chen <>
Tested-by: Chinyue Chen <>
1 file changed