Hatchery roles

start-worker: Allow the hatchery to spawn a worker in the given region

Yaml example:

name: my-permission-name
hatcheries:
  - role: start-worker
    region: nyc-infra
    hatchery: my-swarm-hatchery

List of fields:

role: [mandatory] role to applied
region: [mandatory] the region name
hatchery: [mandatory] the hatchery name