Properly support SSL/TLS options

[joepie91]

• Investigate default SSL/TLS behaviour in Node.js https module.
• Investigate whether there are any possible issues stemming from using a shared HTTPS agent across all TLS requests.
• Investigate why the global agent silently ignores options.
• Draw up a list of sane defaults (eg. disallowing SSLv3, ...)
• Investigate whether streaming mode (ie. agent-less) interferes with the use of TLS options.

Current workaround: Define a custom HTTPS agent.

[kurtmilam]

Looking forward to this one. I used the following option to disallow SSLv3 with request and would like to be able to do the same in bhttp:

agentOptions: { securityOptions: "SSL_OP_NO_SSLv3" }