Basic pluto test:

"westnet-eastnet": 192.0.1.0/24===192.1.2.45[@west]...192.1.2.23[@east]===192.0.2.0/24

the policy has been adjusted to permit only AES256 for phase 1 and twofish
for phase 2.

This test uses twofish from the NETKEY IPsec stack

