Merge "Add API to get current firewall chain status" am: 6421d8456c am: ffa5463448 am: 55bb6008a8

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2117045

Change-Id: I4f9ba7765e378570bbe5f8b6db4398af6dc6684a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>