SOLR-6454: Suppress EOFExceptions in SolrDispatchFilter.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642139 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6607 Managing requesthandlers through API

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642143 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6607 /config path should show overridden requesthandler

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642153 13f79535-47bb-0310-9956-ffa450edef68
speed up tests and make some of these actually reproducible

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642174 13f79535-47bb-0310-9956-ffa450edef68
tone down more overkill tests

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642176 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6370: Allow tests to report/fail on many ZK watches being parallelly requested on the same data

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642180 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6370: oops, put wrong jira # in changes.txt

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642181 13f79535-47bb-0310-9956-ffa450edef68