OptionalonlyWhen set, only the seeder with this name (basename without extension)
is considered, instead of every pending seeder. Still respects the
"already executed" idempotency check unless force is set.
OptionalenvWhen set, seeders whose env field is defined and does not include
this value are skipped (left pending, not recorded as executed).
Seeders with no env field always run.
OptionalforceRe-run a seeder even if it's already recorded as executed. Only takes
effect together with only, to avoid accidentally re-seeding
everything.
Options accepted by SeederRunner#runSeeders