investigate normalize law scalacheck failure

[johnynek]

- Dependencies.normalize laws *** FAILED *** (85 milliseconds)
  TestFailedException was thrown during property evaluation.
    Message: 2 was not greater than or equal to 7
    Location: (ParseGeneratedDocTest.scala:23)
    Occurred when passed generated values (
      arg0 = List((ArtifactOrProject(s),ProjectRecord(Java,Some(Version(892)),Some(Set()),Some(Set((MavenGroup(xknavvePnchys4xtevgolr2v0vh4riYkkggdTqp),ArtifactOrProject(tK5lhelcksbasatftmtgrcokbfQzlsutxregc4yvgvqkfJ)))),None,Some(Set(ProcessorClass(nEqmbql.vWmtgmw), ProcessorClass(mqHXetrH.obFziFwf.huWghCzy.rkzgzudi.zuphzfne.rnnmzUwa))))), (ArtifactOrProject(s),ProjectRecord(Java,Some(Version(314)),Some(Set(Subproject(juKJ9ksbM2sqzheboQsj6), Subproject(wx2mqhqdrcgzfcciwbsmeoba), Subproject(tJxksiFbgzBj5eu), Subproject(m), Subproject(ggaxeldSvmwsrgrcjkhsqvbxlwBiDyh), Subproject(sIJtpnewdjqscspj))),Some(Set((MavenGroup(i),ArtifactOrProject(cvupsxRsfhvPgquzge)), (MavenGroup(uhtz0Xzn),ArtifactOrProject(t)))),Some(Set((MavenGroup(d42mo),ArtifactOrProject(mreet2irgz3umkp3ugykCsc)), (MavenGroup(vmG5uHhtOhhtmuaalnyjwzCbancar4gbm),ArtifactOrProject(hms9ylqsap0jiuUtzxuomcnefftihfYhMhrpxijbai5K5VJ)), (MavenGroup(hbphnhfzqoxdmclwyllbel6th),ArtifactOrProject(gaVuviYSrnojtmgxtwTvxuCgpLLGtgspkwKchdydfl)))),None))) // 5 shrinks
    )