Rename accumulate_push_keys_and_get_config.
Rename accumulate_push_keys_and_get_config.

To better match what it's actually doing.

Change-Id: Ie61361b18847e2e9c5f3bf750ec1458ee318e3e9
Reviewed-on: http://review.couchbase.org/70196
Tested-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>
Reviewed-by: Artem Stemkovski <15a0730a27c69f62ab86f2b6c639fca202166c02@couchbase.com>

membase/ns_server,ceejatec/ns_server,membase/ns_server,ceejatec/ns_server,membase/ns_server,ceejatec/ns_server,ceejatec/ns_server,ceejatec/ns_server,membase/ns_server,ceejatec/ns_server,membase/ns_server,membase/ns_server