testing: Reorganizing IKEv1 and IKEv2 examples

For documentation purposes the new folders ikev1-algs, ikev2-algs,
ikev1-multi-ca and ikev2-multi-ca have been created. Most of the
test cases have now been converted to the vici interface. The
remaining legacy stroke scenarios yet to be converted have been put
into the ikev2-stroke-bye folder.

For documentation purposes some legacy stroke scenarios will be kept
in the ikev1-stroke, ikev2-stroke and ipv6-stroke folders.

testing/tests/ikev2-stroke/rw-eap-sim-id-radius/description.txt

@@ -0,0 +1,13 @@
+The roadwarrior <b>carol</b> sets up a connection to gateway <b>moon</b>.
+At the outset the gateway authenticates itself to the client by sending
+an IKEv2 <b>digital signature</b> accompanied by an X.509 certificate.
+<p/>
+Next <b>carol</b> uses the GSM <i>Subscriber Identity Module</i> (<b>EAP-SIM</b>)
+method of the <i>Extensible Authentication Protocol</i> to authenticate herself.
+In this scenario triplets from the file <b>/etc/ipsec.d/triplets.dat</b> are used
+instead of a physical SIM card.
+<p/>
+The gateway forwards all EAP messages to the RADIUS server <b>alice</b>
+which also uses static triplets. In addition to her IKEv2 identity
+<b>carol@strongswan.org</b>, roadwarrior <b>carol</b> uses the EAP
+identity <b>228060123456001</b>.