If we are changing identiy (different principal) insure we remove the
session cookie stored on the rpc context so that we do not mistakenly
connect with the previous identity credentials.
https://fedorahosted.org/freeipa/ticket/6543
Signed-off-by: Simo Sorce <simo@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>