Fix int truncation in auth token handling

HardwareAuthToken.timestamp is uint64_t but got truncated to uint32_t by
timestamp_host_order(). Also add some logging to undertand the issue of
bad auth token on ryu.

Bug: 65283496
Test: builds and runs
Change-Id: Ia51d0880f47594e6ab02e46bec270ee68dc5823f
3 files changed