Don't return 409 to the client on transaction failure.
Don't return 409 to the client on transaction failure.

Because it's not really a client problem.

Change-Id: I5484c86d13b0015a06bb48d2005e7422dc671b63
Reviewed-on: http://review.couchbase.org/54031
Reviewed-by: Poonam D <6855f09986fe28ed7e8cdd9d60db878d898703d5@couchbase.com>
Tested-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>

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