Update common-build.xml version to next stable branch version

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1619606 13f79535-47bb-0310-9956-ffa450edef68
More version settings. We should really clean up the root's build file. I have an idea for that - will open issue!

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1619607 13f79535-47bb-0310-9956-ffa450edef68
close DV producers on exception

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1619610 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6400: SolrCloud tests are not properly testing session expiration.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1619613 13f79535-47bb-0310-9956-ffa450edef68