The job factory will now accept an array of resourceSpecs that is a shorthand
notation for memory, cpu, disk, and iops requirements.
These specs get passed down to task groups. The task group factory will
split the resource requirements near evenly (there is variance
threshold) across all expected tasks.
Allocations then construct task-resource objects based on the resources
from the matching task.
This sets a default-but-query-configurable Faker seed in development,
via faker-seed. It also changes uses of Math.random to use Faker’s
randomness so auto-generated data remains stable in development.
