IKEv2 Mismatched authentication on the initiator (west), and on the responder.

Responder is configured as
leftauthby=null 	leftid=%null
rightauth=rsasig 	rightid="%fromcert"

Initiator is configured with symmetric auth
authby=null
leftid="%null"
rightid="%fromcert"

This test should not establish a connection. The initiator should reject it.
