Exclude more java classes from the Checkstyle Class Fan Out Complexity check

The idea is to add excluded classes from java.lang.* and java.util.* since they can be considered part of the language and do not bring additional complexity since they're known by all Java developers.

Specifically add the collections classes.

Note that we need to do this since the Checkstyle project isn't fixing these issues and is not proposing any solution to configure the check:

• https://sourceforge.net/p/checkstyle/feature-requests/607/
• https://sourceforge.net/p/checkstyle/bugs/684/

See also the discussion we've had at http://markmail.org/thread/snun6avp3qlkg54k