Update .travis.yml to include rosetta jar.
Update .travis.yml to include rosetta jar.

- Update .travis.yml to include the upload to the maven repository of the
  rosetta jar found in:
  https://github.com/NLNZDigitalPreservation/rosetta-dps-sdk-projects-maven-lib.
  This jar is a dependency of the project build.

DIA-NZ/webcurator,DIA-NZ/webcurator,DIA-NZ/webcurator,DIA-NZ/webcurator