Use invalid address in binding test

IANA has reserved the 198.18.0.0/24 network for Network Interconnect Device
Benchmark Testing which vaguely fits what we are doing.  Use that
instead of 127.0.0.2 since the latter works fine to bind to on Linux
(at least).


git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@3116 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishtest/tests/c00003.vtc

@@ -9,7 +9,9 @@ server s1 {
 	txresp -hdr "Connection: close" -body "012345\n"
 } -start
 
-varnish v1 -cliok "param.set listen_address 127.0.0.2:9082"
+# 198.18.1.1 is IANA-reserved for Network Interconnect Device
+# Benchmark Testing
+varnish v1 -cliok "param.set listen_address 198.18.1.1:9082"
 varnish v1 -vcl+backend {} -clierr 300 start
 varnish v1 -cliok "param.set listen_address :9081,127.0.0.2:9082"
 varnish v1 -start