As we get down to the transport layer, plenty of functions are passed
the session pointer and assume the transport to use is ses->server.

Instead we modify those functions to pass (ses, server) so that we
can decouple the session from the server.
Signed-off-by: NAurelien Aptel <aaptel@suse.com>
Signed-off-by: NSteve French <stfrench@microsoft.com>