[MPOM-162] Replace usage of the deprecated sourceDirectory and testSourceDirectory in Checkstyle configuration

Using the new sourceDirectories and testSourceDirectories instead of the deprecated parameters.

git-svn-id: https://svn.apache.org/repos/asf/maven/pom/trunk@1782693 13f79535-47bb-0310-9956-ffa450edef68
1 file changed