Revert "Skip connectivity unit tests before S"

This reverts commit 05dd1ba54005b15d92daf6f26329acf91fb3debb.

Reason for revert: Skips more tests than it should in AOSP
Bug: 192302892

Change-Id: I7c5638d8c1cc626354d240a06af758e1cdd92e94
57 files changed