Resolve https://github.com/archivesunleashed/docker-aut/issues/17

[ruebot]

GitHub issue(s):

• unable to run docker image docker-aut#17
• spark-shell --packages "io.archivesunleashed:aut:0.10.0"` fails with not_found dependencies #113

What does this Pull Request do?

Adds a missing dependency to pom.xml so we can build with packages.

How should this be tested?

• TravisCI should pass.
• See: https://gist.github.com/ruebot/7e3201036d03ea0ad6471bc86abf7603
• It should be good to go, but if you want to test it locally, you'll need to modify the Dockerfile on the master branch, and then docker build -t aut . && docker run --rm -it aut.

Should be an easy merge if you want to merge it @lintool.

[codecov]

Codecov Report

Merging #217 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #217   +/-   ##
=======================================
  Coverage   66.16%   66.16%           
=======================================
  Files          34       34           
  Lines         665      665           
  Branches      124      124           
=======================================
  Hits          440      440           
  Misses        184      184           
  Partials       41       41

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[ianmilligan1]

Looks good to me!