[maven-release-plugin] copy for tag maven-checkstyle-plugin-3.1.0

[maven-release-plugin] copy for tag maven-checkstyle-plugin-3.0.0

maven-checkstyle-plugin-2.17 reworked after migration from aggregate …

…svn to split git

maven-checkstyle-plugin-2.16 reworked after migration from aggregate …

…svn to split git

maven-checkstyle-plugin-2.15 reworked after migration from aggregate …

…svn to split git

maven-checkstyle-plugin-2.14 reworked after migration from aggregate …

…svn to split git

maven-checkstyle-plugin-2.13 reworked after migration from aggregate …

…svn to split git

maven-checkstyle-plugin-2.12.1 reworked after migration from aggregat…

…e svn to split git

maven-checkstyle-plugin-2.12 reworked after migration from aggregate …

…svn to split git

maven-checkstyle-plugin-2.11 reworked after migration from aggregate …

…svn to split git