Merge "Add Multiplexer logic" into udc-dev am: 8853992fb3

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/22880446

Change-Id: I7e664e4e26de06e2c476e20be285b066fd57dc5e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>