[MRESOURCES-194] Upgrade to maven-parent version 26
 - Fixed some checkstyle reported issues.


git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1639943 13f79535-47bb-0310-9956-ffa450edef68
[MRESOURCES-194] Upgrade to maven-parent version 26
 - Followup
   cleaning up pom cause the parent does already
   the work. No need to define maven-plugin-plugin version etc.


git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1639945 13f79535-47bb-0310-9956-ffa450edef68
[MRESOURCES-195] Upgrade maven-plugin-testing-harness to 1.3


git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1639946 13f79535-47bb-0310-9956-ffa450edef68