added plexus-snapshots repository

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1593685 13f79535-47bb-0310-9956-ffa450edef68
[MSITE-711] added report's goal name to output

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1593736 13f79535-47bb-0310-9956-ffa450edef68
use 1.2

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1593739 13f79535-47bb-0310-9956-ffa450edef68