Investigate HttpCommandExecutorService(s) with regards to POODLE

SSLModule configures the SSLContext when using "untrusted" configuration:

            sc = SSLContext.getInstance("SSL");
            sc.init(null, new TrustManager[] { trustAllCerts }, new SecureRandom());

This makes the client end of the SSL connection vulnerable to POODLE (http://googleonlinesecurity.blogspot.com/2014/10/this-poodle-bites-exploiting-ssl-30.html)

jclouds should consider enforcing TLS on all client connections, even on ones already susceptible to MITM attacks.

We should also investigate other uses of SSLContext in jclouds.