DcpProducer should be a permission to read, DcpConsumer - write
DcpProducer should be a permission to read, DcpConsumer - write

Trond:
To suck out data from a memcached server you would open a
DCP Producer stream (memcached is producing the data),
The DCP Consumer privilege is needed in order to tell
memcached to _consume_ a DCP stream and apply all of the mutations.

Change-Id: Idedd4efb30d268a0a10968d21270b6cc23a17d27
Reviewed-on: http://review.couchbase.org/76101
Tested-by: Artem Stemkovski <15a0730a27c69f62ab86f2b6c639fca202166c02@couchbase.com>
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>
Reviewed-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>

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