Allow adbd to access /proc/net/{tcp,tcp6,udp,udp6} am: f7727ace66 am: 84f6646c7c am: 8bac0a5547

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/sepolicy/+/16602719

Change-Id: I6b238d7a199f228708714d3aec189a910e43e38e