Ignore Java 9's module-info classes by default

[bclozel]

It is easy to configure this plugin to ignore duplicate module-info.class classes with the following:

<configuration>
  <ignoredClassPatterns>
    <ignoredClassPattern>module-info</ignoredClassPattern>
  </ignoredClassPatterns>
</configuration>

Since those classes might be quite common in the future, shouldn't this be ignored by default?
Otherwise, those are marked as duplicate classes with different content.

[hgschmie]

will be in 1.3.0

[whiskeysierra]

I see a similar issue now with /META-INF/versions/9/module-info.class

[whiskeysierra]

https://travis-ci.org/zalando/logbook/jobs/448681344

[bclozel]

@whiskeysierra Yes, see spring-projects/spring-boot@c82a13d

@hgschmie should we open a new issue or reopen this one?