NETCONF depends on Jackson dependencies pulled in by AAA

AAA only chose to keep exposing these features since it was too late in Oxygen to remove them and make cross-project changes in NETCONF.  AAA wants to remove Jackson completely through:

https://git.opendaylight.org/gerrit/#/c/70055/

However, NETCONF currently depends on AAA bringing in these dependencies improperly.  It should specify them itself!