Require a setting in cbq that query has \set -profile "benchmark"

On the query side we can say in cbq

\set -profile "benchmark";

This is very similar to 
\set -profile "timings";

When the benchmark setting is used, all output is suppressed just before the output documents are returned to the client.

This is very useful when we are running performance suites where some queries generate a large number of output rows. In such cases the elapsed time is dominated by the time it takes to print the output rows. We want to capture the time it takes to produce all the output rows but not the time it takes to output them.

This setting was added on the query side to run focus suites. We will be running focus suites on the analytics side soon.