Adding test suite for trancated _update
Adding test suite for trancated _update

COUCHDB-3158

fkaempfer/couchdb,apache/couchdb-couch,fkaempfer/couchdb,cloudant/couchdb-couch,cloudant/couchdb-couch,cloudant/couchdb-couch,fkaempfer/couchdb,fkaempfer/couchdb,apache/couchdb-couch,apache/couchdb-couch,fkaempfer/couchdb,fkaempfer/couchdb