ssl: ssl protocol configurable

We make ssl protocol configurable in config.py.


Change-Id: Idb4889cb30f23c5e3e9221893cf07a02d051d8b5
Signed-off-by: pkliczewski <piotr.kliczewski@gmail.com>
Bug-Url: https://bugzilla.redhat.com/1154184
Reviewed-on: http://gerrit.ovirt.org/34345
Reviewed-by: Dan Kenigsberg <danken@redhat.com>
Reviewed-by: Saggi Mizrahi <smizrahi@redhat.com>