Merge "Update the QUIC packet format." am: 1dd1530647 am: 7240385821 am: fac58c092c am: a58debbb5d

Original change: https://android-review.googlesource.com/c/platform/cts/+/1454515

Change-Id: I42f394b86af1d599e57d711600730fad15f6c249
tree: 8e49670d1884a07e966f429acd79fea52973948c
  1. tests/