CheckIndex and IndexWriter (w/ APPEND open mode) should not use SIS retry logic

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1628786 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6512: Add a collections API call to add/delete arbitrary properties to a specific replica

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1628802 13f79535-47bb-0310-9956-ffa450edef68