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

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

Change-Id: I3d9799b5fcaf8b64500840c66f83a55ac89a8e50
tree: cb6d68ff532379b1ddcd793084c555889932983e
  1. tests/