
This is a preparatory change for adding support for Elasticsearch version 5, where handling of keyword types is changed. For the Lucene index, handle KEYWORD the same way as EXACT. For Elasticsearch, also handle both KEYWORD and EXACT in the same way since at this point we don't yet support Elasticsearch 5. Change-Id: I545c3ce85b44f6f640c51afd22ba3c663ff6ba80