Solr Jenkins test fails are out of control.
As evident by jenkins test fails in the email.
Commit 1674666 from Mark Miller in branch 'dev/trunk'
[ https://svn.apache.org/r1674666 ]
SOLR-7426: SolrConfig#getConfigOverlay does not clean up it's resources.
Commit 1674668 from Mark Miller in branch 'dev/branches/branch_5x'
[ https://svn.apache.org/r1674668 ]
Bulk close for 5.2.0.