aaa-cli-jar missing in stable/nitrogen and master

In AAA-138 and Gerrit 60049 Michael added a tool for changing ODL NB username/password without starting up the controller. This is required for deployments using configuration management tools like puppet-opendaylight and ansible-opendaylight. Major downstream consumers like OPNFV use this extensively in production for stable/carbon, but it's missing and causing failures for stable/nitrogen and master. Need to add the tool to those branches.