Currently Go supports 'runOnAll' agents which basically matches the resource of job with available agents & spawn required amount of jobs.

It would nice to pre-declare the number of instances of job i would like to have irrespective of agents available.

Usecase: build.go.cd runs tests in parallel for common & server module. It also runs twist tests in parallel. The job configs for these are duplicated. With this feature we can have one config that spawns into 'x' instances.

It should also expose an env. var indicating the instance of job (1, 2, 3 etc.) to be consumed by task.