testing: Added pfkey/compress test case

testing/tests/pfkey/compress/description.txt

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+This scenario enables IPComp compression between roadwarrior <b>carol</b> and
+gateway <b>moon</b>. Two pings from <b>carol</b> to <b>alice</b> check
+the established tunnel with compression. The packet sizes of the two pings
+are different because the kernel does not compress small packets.

testing/tests/pfkey/compress/evaltest.dat

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+carol::ipsec status 2> /dev/null::home.*ESTABLISHED.*[email protected].*moon.strongswan.org::YES
+moon:: ipsec status 2> /dev/null::rw.*ESTABLISHED.*moon.strongswan.org.*[email protected]::YES
+carol::ipsec status 2> /dev/null::home.*INSTALLED, TUNNEL.*IPCOMP::YES
+moon:: ipsec status 2> /dev/null::rw.*INSTALLED, TUNNEL.*IPCOMP::YES
+moon:: cat /var/log/daemon.log::IKE_AUTH request.*N(IPCOMP_SUP)::YES
+moon:: cat /var/log/daemon.log::IKE_AUTH response.*N(IPCOMP_SUP)::YES
+moon:: ip xfrm state::proto comp spi::YES
+carol::ip xfrm state::proto comp spi::YES
+carol::ping -n -c 1 -s 8184 -p deadbeef PH_IP_ALICE::8192 bytes from PH_IP_ALICE::YES
+carol::ping -n -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE::YES
+moon::tcpdump::carol.strongswan.org > moon.strongswan.org: ESP::YES
+moon::tcpdump::moon.strongswan.org >  carol.strongswan.org: ESP::YES

testing/tests/pfkey/compress/hosts/carol/etc/ipsec.conf

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+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	keyexchange=ikev2
+	compress=yes
+	leftfirewall=yes
+
+conn home
+	left=PH_IP_CAROL
+	leftcert=carolCert.pem
+	[email protected]
+	right=PH_IP_MOON
+	rightsubnet=10.1.0.0/16
+	[email protected]
+	auto=add

testing/tests/pfkey/compress/hosts/carol/etc/strongswan.conf

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+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-pfkey kernel-netlink socket-default updown
+}

testing/tests/pfkey/compress/hosts/moon/etc/ipsec.conf

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+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	keyexchange=ikev2
+	compress=yes
+	leftfirewall=yes
+
+conn rw
+	left=PH_IP_MOON
+	leftcert=moonCert.pem
+	[email protected]
+	leftsubnet=10.1.0.0/16
+	right=%any
+	[email protected]
+	auto=add

testing/tests/pfkey/compress/hosts/moon/etc/strongswan.conf

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+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-pfkey kernel-netlink socket-default updown
+}

testing/tests/pfkey/compress/posttest.dat

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+moon::ipsec stop
+carol::ipsec stop
+moon::iptables-restore < /etc/iptables.flush
+carol::iptables-restore < /etc/iptables.flush

testing/tests/pfkey/compress/pretest.dat

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+carol::iptables-restore < /etc/iptables.rules
+moon::iptables-restore < /etc/iptables.rules
+carol::ipsec start
+moon::ipsec start
+carol::sleep 2
+carol::ipsec up home

testing/tests/pfkey/compress/test.conf

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+#!/bin/bash
+#
+# This configuration file provides information on the
+# guest instances used for this test
+
+# All guest instances that are required for this test
+#
+VIRTHOSTS="alice moon carol winnetou"
+
+# Corresponding block diagram
+#
+DIAGRAM="a-m-c-w.png"
+
+# Guest instances on which tcpdump is to be started
+#
+TCPDUMPHOSTS="moon"
+
+# Guest instances on which IPsec is started
+# Used for IPsec logging purposes
+#
+IPSECHOSTS="moon carol"
+