func CheckEnvironment(worker DaisyWorker, check func(env EnvironmentSettings)) {
	check(worker.(*defaultDaisyWorker).env)
}
CheckEnvironment allows a test to check the fields on the EnvironmentSettings associated with a DaisyWorker.
package daisyutils
import (
	"github.com/GoogleCloudPlatform/compute-image-tools/daisy"
)
func CheckWorkflow(worker DaisyWorker, check func(wf *daisy.Workflow)) {
	check(worker.(*defaultDaisyWorker).wf)
}