rfe10902. Add query_size to run N queries during events test.
rfe10902. Add query_size to run N queries during events test.

Adds a --query-size command-line argument to the events test,
which should be a non-negative integer. When specified, instead
of running each query phase for OPT.QUERY_TIME minutes,
each QUERY_WORKER will run QUERY_SIZE / QUERY_WORKER queries.

Tests added for: None

Change-Id: I9152d64cb6d0ae6b8d7f34d17563311daae0f39e
Reviewed-on: https://gerrit.franz.com:9080/1645
Reviewed-by: John O'Rourke <090daf49d68aa48f3089db880627955a30371233@franz.com>
Reviewed-by: Ahmon Dancy <8f7d8ce2c6797410ae95fecd4c30801ee9f760ac@franz.com>
Tested-by: Kevin Layer <d54c2aa2f61603022c71493f093f0c718419ca13@franz.com>

franzinc/agraph-python,franzinc/agraph-python,franzinc/agraph-python,franzinc/agraph-python