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] https://github.com/noxxi/p5-io-socket-ssl/issues/121