Merge "Use java BpfMap in BpfNetMaps#setChildChain" am: bccf9df50e

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2131752

Change-Id: I918be46af37c015694ba05f00845a1e9765969a3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>