LUCENE-4975: replicator module: Maven configuration: remove <pluginManagement> wrapper from around the surefire plugin config, so that it will operate in situ (merged trunk r1481958)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1481960 13f79535-47bb-0310-9956-ffa450edef68