querycmd: Change default command arguments and messages

Change-Id: I7cab8bff53c437049139938f0e8307d2e975df05
Reviewed-on: http://review.couchbase.org/43328
Reviewed-by: Sarath Lakshman <sarath@couchbase.com>
Tested-by: Sarath Lakshman <sarath@couchbase.com>