Merge "New firewall chain for default background restrictions" into main am: 6bca8c1d

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2818818



Change-Id: I38579c52fedcbfd11e20bf051a2890ac8ce2e52b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>