Tests: fixed hostname verification in ssl_certificate_chain.t.

ssl_certificate_chain.t doesn't supply the hostname expected in a tested
certificate, which causes IO::Socket::SSL to fall back to an IP address
given in PeerAddr.  As of IO::Socket::SSL 2.078, verification enabled by
default for such hostnames [1] results in "hostname verification failed"
errors.
To keep tests simple, the IP address is now included in subjectAltName.

[1] noxxi/p5-io-socket-ssl#121

Author: pluknet

ssl_certificate_chain.t

@@ -97,6 +97,7 @@ commonName = supplied
 
 [ myca_extensions ]
 basicConstraints = critical,CA:TRUE
+subjectAltName = IP:127.0.0.1
 EOF
 
 foreach my $name ('root') {