The default ShardingTest verbosity is currently zero, but we have many
tests, which bump it to 1 and even higher.
Since verbosity level of 0 is sometimes insufficient for investigating
transient failures, this change makes the default to be 1 and removes all
places, which explicitly make it 1 or higher.
The actual change is in src/mongo/shell/collection.js with the remaining changes
to adjust tests to the new api.
The "ideal" arguments are now an array of pipeline ops and an optional object
with extra top-level options for the command (such as {explain: true}. For
backwards compatibility, we still support the varargs style where each argument
is a pipeline stage, but there is no way to specify extra parameters in this
mode.
