bump scalatest to 2.2.2
bump scalatest to 2.2.2

mostly to pick up wildcard test-suite handling, e.g.:

    $ mvn test -Dsuites="*MdTag*"

(hammerlab has a helper around this for even more convenience; see
https://github.com/hammerlab/internal-tools/blob/master/scripts/mvn-utils/mvn-test)

VinACE/adam,VinACE/adam,bigdatagenomics/adam,kcompher/adam,gazimahmud/adam,heuermh/adam,FusionWorks/adam,kcompher/adam,tdanford/adam,massie/adam,allenday/adam,SwathiMystery/adam,erictu/adam,erictu/adam,tdanford/adam,allenday/adam,heuermh/adam,gazimahmud/adam,rnpandya/adam,tdanford/adam,bigdatagenomics/adam,bigdatagenomics/adam,SwathiMystery/adam,FusionWorks/adam,kcompher/adam,gazimahmud/adam,allenday/adam,gazimahmud/adam,erictu/adam,kcompher/adam,tomwhite/adam,rnpandya/adam,bigdatagenomics/adam,heuermh/adam,FusionWorks/adam,FusionWorks/adam,massie/adam,rnpandya/adam,tdanford/adam,heuermh/adam,VinACE/adam,laserson/adam,SwathiMystery/adam,tomwhite/adam,massie/adam,rnpandya/adam,laserson/adam,VinACE/adam,tomwhite/adam,tomwhite/adam,allenday/adam,laserson/adam,erictu/adam,laserson/adam,SwathiMystery/adam,massie/adam