Merge "Update the integration test to verify zero-length DHCP packet." am: 5a44770232

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2554931

Change-Id: I62d43a09bddbfcf7e084550671453ac6b457cb7e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>