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 twofish128 
for phase 2.

Depending on stack (klips vs netkey) and the availability of TWOFISH in the
kernel, this test will succeed or fail.

Paul: I believe cryptoapi and klips do not support twofish, but netkey does.

