Update Verifying http client factory to get rid of cookie warnings

[jjg-123]

The current internals are based on the Apache http libraries < 4.3 and we are now at 4.4+ For one thing, specification changes now mean we are getting annoying warnings on cookies from certain servers (which even worse, cannot seem to be suppressed) since that spec changed and we don't follow the updated spec. The problem with updating HttpClient is that we need custom SSL sockets with our trust manager and that really can't be side-stepped. There is a way to do this with 4.4, but it is not obvious and in any case, should not be undertaken lightly.

[jjg-123]

It may be worth ditching HTTP Client 4.x in favor of 5.x. There is a migration guide: https://hc.apache.org/httpcomponents-client-5.2.x/migration-guide/migration-to-classic.html This is, however, a much more complex beast than 4.x, so this may not be straightforward at all to get the same functionality.

While we are at it, this look relevant as well: https://www.tutorialspoint.com/apache_httpclient/apache_httpclient_custom_ssl_context.htm We need a custom SSL socket to allow for a lot of testing locally as well as some magic for MyProxy (ever less important, but still in use).