added an asMap() method

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1634047 13f79535-47bb-0310-9956-ffa450edef68
Revert backport

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1634051 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6651: Fix wrong timeout logged in waitForReplicasToComeUp

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1634057 13f79535-47bb-0310-9956-ffa450edef68