[LegacyVpnTest] Disable libreswan tests

CHERRY PICKED CHANGES FROM AOSP

Bug: 65412107
Change-Id: Idaf1f4a08dde1fb858f4b1826769c463263c0c5c
Tests: Verified the changes
1 file changed
tree: 50a63b1483182e62d16674187425075de2aa3e84
  1. acts/
  2. tools/
  3. Android.mk
  4. PREUPLOAD.cfg