Changed do_catalog_query to distribute catalog requests to a single partition on each up node.
Changed do_catalog_query to distribute catalog requests to a single partition on each up node.

Catalog queries run across partitions at the moment.  Until that changes to cover all catalogs we just need one request per node.

xuejianhai/riak_search,basho/riak_search,basho/riak_search,wwezhuimeng/riak_search,wwezhuimeng/riak_search,xuejianhai/riak_search