Add boto special casing for param changes in 2.14

boto 2.14 has some interface changes with the get_http_connection
call which adds port as a non optional parameter *in the middle of*
existing non optional parameters. It's a special kind of incompatible
change.

We are already special casing around boto in the unit tests, lets
just do more of that if we are running on a newer version.

Co-Authored-By: Dan Smith <dansmith@redhat.com>
Closes-bug: #1237944
Change-Id: If388d872286eca15bf24a582db1bac22224a8b24