Revert "Use new test utilities from frameworks/libs/net"

Revert submission 1440811-iputils_constants_move

Reason for revert: Likely broke build in b/170438226
Reverted Changes:
Ic382d24e7:Move NetworkStackConstants to frameworks/libs/net
I0d938e296:Use new test utilities from frameworks/libs/net

Change-Id: Iec4709778ba1b30687df265a2a5c694c536b5456
3 files changed