Update visibility to for net cts to use shims am: a331c3a7f0 am: 9d60e25db7

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/1609053

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I7db1b1bc7ce96bed73af26119d4b3794a9835db3