Merge "BpfRingBuffer: allow subclassing, add epoll support" into main am: 9f0fb132ee

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3155176

Change-Id: I0d3c59ac3f05917611658e5596a1d11f6b808f8b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>