Disable SSLv3 for socket connections to avoid POODLE vulnerability.

This is my take to disable SSLv3 for socket connections on port 5222. (There was another PR for admin console and BOSH). See OF-861.

I've tested it with a client, which only supports SSLv3 and it will receive the following exception during handshake then:
javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure