SOLR-5295: The CREATESHARD collection API creates maxShardsPerNode number of replicas if replicationFactor is not specified

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1528426 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5296: Creating a collection with implicit router adds shard ranges to each shard

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1528440 13f79535-47bb-0310-9956-ffa450edef68