a pluto test of transport mode.

A single transport mode SA is created between west and east, for port 3.
On west, firewalling makes sure that one can only access port 3 via IPsec.

the PFSgroup is set to a different group than the phase1.

Once the tunnel is up, a ping is also sent, as these should now FAIL
because the traffic selecor now only allows port 3
