define explicit IKEv1 key exchange mode

testing/tests/ike/rw-cert/hosts/dave/etc/ipsec.conf

@@ -9,6 +9,7 @@ conn %default
 	keylife=20m
 	rekeymargin=3m
 	keyingtries=1
+	keyexchange=ikev2
 
 conn home
 	left=PH_IP_DAVE
@@ -17,5 +18,4 @@ conn home
 	right=PH_IP_MOON
 	rightid=@moon.strongswan.org
 	rightsubnet=10.1.0.0/16
-	keyexchange=ikev2
 	auto=add

testing/tests/ike/rw-cert/hosts/moon/etc/ipsec.conf

@@ -9,6 +9,7 @@ conn %default
 	keylife=20m
 	rekeymargin=3m
 	keyingtries=1
+	keyexchange=ikev1 
 
 conn rw
 	left=PH_IP_MOON