Revert "Revert "Change the root of trust for CryptAuth Vault Service""

This reverts commit be4f735cb199d184431d718b245ac51c4e7a70bf.

Reason for revert: Resubmit the CL http://ag/3983388 that was reverted. The server side change has been deployed now.

Bug: 78920513
Change-Id: If676799176ecf90fd51a97027a9ff83bec5d4bed
4 files changed