Merge "Add setFirewallChainEnabled API" am: 9bba8e8c78 am: e7da24518c am: 8be68c843f

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1916597

Change-Id: Id38b55882c904f26cb1b01ab0a6c99d3a590630b