[SPARK-12821][BUILD] Style checker should run when some configuration files for style are modified but any source files are not.

When running the `run-tests` script, style checkers run only when any source files are modified but they should run when configuration files related to style are modified.

Author: Kousuke Saruta <sarutak@oss.nttdata.co.jp>

Closes #10754 from sarutak/SPARK-12821.