jsonrpc: ssl related code moved to single module

New sslutils module was created to keep all ssl related code.
Unit tests will be added later.

Change-Id: If941d90edc08e37e6c0707f3f3bc30f517f9e8eb
Signed-off-by: pkliczewski <piotr.kliczewski@gmail.com>
Reviewed-on: http://gerrit.ovirt.org/28506
Reviewed-by: Dan Kenigsberg <danken@redhat.com>
Reviewed-by: Nir Soffer <nsoffer@redhat.com>