Upgrade to Maven Checkstyle plugin 2.14

Release Notes - Maven Checkstyle Plugin - Version 2.14

** Bug
    * [MCHECKSTYLE-249] - ITs failing when building on Windows from distribution prepared on Unix
    * [MCHECKSTYLE-254] - Update plexus-interpolation to avoid thread safety issues
    * [MCHECKSTYLE-255] - First checkstyle error is not printed in the console ouput

** Improvement
    * [MCHECKSTYLE-251] - Upgrade to Checkstyle 5.8
    * [MCHECKSTYLE-256] - add Java package information to output, instead of class name only
    * [MCHECKSTYLE-257] - display content/documentation of Checkstyle configurations predefined by maven-checkstyle-plugin in plugin's documentation site
    * [MCHECKSTYLE-262] - Upgrade to maven-plugins parent version 27
    * [MCHECKSTYLE-263] - Removed dependency plexus-container-default:1.0-alpha-9-stable-1
    * [MCHECKSTYLE-282] - add info on ruleset used in report intro
    * [MCHECKSTYLE-283] - Move maven_checks.xml and maven-header.txt away from the plugin

** Task
    * [MCHECKSTYLE-274] - remove Avalon configuration since the Avalon project is retired
    * [MCHECKSTYLE-276] - remove RedundantThrows rule from default configs
    * [MCHECKSTYLE-280] - add documentation on upgrading Checkstyle at runtime
    * [MCHECKSTYLE-281] - fail if deprecated parameters are used and display update instructions