Improve the APIConformance-Tests Generator Maven Plug-In with default phase/goal

[ghostcity]

• http://maven.40175.n5.nabble.com/Can-a-plugin-have-a-default-execution-goal-td108343.html)
• http://stackoverflow.com/questions/5732828/how-to-define-a-default-mojo-for-a-maven-plugin
• https://books.sonatype.com/mvnref-book/reference/writing-plugins-sect-plugins-lifecycle.html#ex-override-lifecycle
• https://www.google.de/search?q=maven+plugin+default+goal