[automerger] Merge "Update the QUIC packet format." into nougat-cts-dev am: f6a0cdcba6 am: 06fdc1fbef am: f46e9a77bb am: 6dc2bb4a4a am: 379881299d am: 6e1d6f8c23

Change-Id: I1edbb45a48d7f04a902ee61c4dc1e7422b301df8
tree: 1fb1086b81fbb4909107af3c10510f0f3837bbab
  1. tests/