added two scenarios testing repeated authentication (RFC 4478)

testing/tests/ikev2/reauth-early/evaltest.dat

@@ -0,0 +1,7 @@
+moon::ipsec statusall::rw\[2\].*ESTABLISHED::YES
+carol::ipsec statusall::home\[2\].*ESTABLISHED::YES
+carol::cat /var/log/daemon.log::received AUTH_LIFETIME of 30s, scheduling reauthentication in 25s::YES
+carol::cat /var/log/daemon.log::maximum IKE_SA lifetime 30s::YES
+carol::ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_seq=1::YES
+moon::tcpdump::IP carol.strongswan.org > moon.strongswan.org: ESP::YES
+moon::tcpdump::IP moon.strongswan.org > carol.strongswan.org: ESP::YES