Ignore tests that seem to depend on the old Lucene 2.x format

git-svn-id: https://svn.apache.org/repos/asf/maven/indexer/branches/lucene-4.6@1575160 13f79535-47bb-0310-9956-ffa450edef68
back to 1.6

git-svn-id: https://svn.apache.org/repos/asf/maven/indexer/branches/lucene-4.6@1575161 13f79535-47bb-0310-9956-ffa450edef68