[MNG-5761] Dependency management is not transitive.
[MNG-5761] Dependency management is not transitive.

o Updated to add a missing test dependency (used but undeclared) managed to
  non-transitive test scope transitively. The compilation error without
  that declaration in fact is expected behaviour. Don't let them fool you.

  I can build all plugins using 3.4.0-SNAPSHOT by upgrading the plugin tools
  manually on the command line like:

  mvn -DmavenPluginToolsVersion=3.5 test-compile



git-svn-id: 6038db50b076e48c7926ed71fd94f8e91be2fbc9@1776591 13f79535-47bb-0310-9956-ffa450edef68

hgschmie/apache-maven-plugins,hazendaz/maven-plugins,mcculls/maven-plugins,mcculls/maven-plugins,hazendaz/maven-plugins,apache/maven-plugins,hgschmie/apache-maven-plugins,rkorpachyov/maven-plugins,rkorpachyov/maven-plugins,rkorpachyov/maven-plugins,apache/maven-plugins,apache/maven-plugins,hazendaz/maven-plugins,mcculls/maven-plugins,rkorpachyov/maven-plugins,apache/maven-plugins,rkorpachyov/maven-plugins,mcculls/maven-plugins,hazendaz/maven-plugins,hazendaz/maven-plugins,hgschmie/apache-maven-plugins,hgschmie/apache-maven-plugins,apache/maven-plugins