Added sub-reader logic
Fixed: subreader was not closed.
Merge pull request #12 from sindicetech/cdcr-subreader

Cdcr subreader
Fixed jetty home directory
Merge pull request #13 from sindicetech/cdcr-testframework-fix

Fixed jetty home directory
Batch cdcr updates
Fixed subreader for batch updates.
Added configuration parameter for batch size
Added unit test for batch updates with deletes
Merge pull request #15 from sindicetech/cdcr-batchupdates

Cdcr batchupdates
merged with solr6273