Merge "Use java BpfMap in BpfNetMaps#setChildChain" am: bccf9df50e am: 953eb9ed54

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

Change-Id: I4002515fda94ca134ac8930bca53d37ec58e1855
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>