Support get apf capabilities from network_stack shell command am: c6fae35cfd

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3164021

Change-Id: Ib346cfb6d909c81c06226b740a46868852e34db9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>