a233ac2084
A staging Root CA public key was used in earlier releases to verify service certificates. These were in turn used to encrypt the client identification. This met our needs for an end-to-end verification. Now that the production Root CA and service certs are available this change replaces staging certs with production ones. Merge of https://widevine-internal-review.googlesource.com/#/c/7560/ from the widevine CDM repo b/10329328 Change-Id: Id02649201d9a8ba4d08acc4166503341a5bbdd23