Bump to yangtools-2.0.0 and odlparent-3.0.2

Bump to yangtools-2.0.0 and odlparent-3.0.2

This patch also embeds MOXy inside northbound-api in order to deal
with javax.ws.rs version mismatch between jersey (1.1.x) and jackson
(2.0.1), where MOXy has a revisionless import and hence binding
to jackson version -- preventing it from working with jersey;
see NEUTRON-154 for full background.

Change-Id: I9663ad4df3bae44e9de27ee0c7659cb2e3fa578a
Signed-off-by: Tom Pantelis <tompantelis@gmail.com>
Signed-off-by: Michael Vorburger <vorburger@redhat.com>
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>