* feat: add seconds to generated load files
This adds seconds to the time string portion of the generated files from
load generation runs. Previously, if the generator was run more than once
in the same minute, latter runs would fail because the results files
already exist.
* refactor: make query/write/system graphs optional based on run
Made the analysis tool have optional graphs based on what was actually
generated.
* refactor: change the time string format in generated load files
Trevor Hilton
Paul Dix