SOLR-6137: Disable SSL for TestCloudSchemaless

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1611445 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5830: Fix some missing/assert codec checks to throw CorruptIndexException

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1611471 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6210
SOLR-2245: Better way to check if last_index_time is the initial value and fixup changes.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1611667 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'upstream/trunk' into trunk