make this delay configurable

[github-actions]

https://api.github.com/gogrlx/grlx/blob/2ae30f217edc2655ab355a82a26b3d9c8708105f/cmd/sprout/main.go#L43

	certs.GenNKey(false)
	for err := pki.LoadRootCA("sprout"); err != nil; err = pki.LoadRootCA("sprout") {
		log.Debugf("Error with RootCA: %v", err)
		// TODO make this delay configurable
		time.Sleep(time.Second * 5)
	}
	for err := pki.PutNKey(sproutID); err != nil; err = pki.PutNKey(sproutID) {
		log.Debugf("Error submitting NKey: %v", err)

		// TODO make this delay configurable
		time.Sleep(time.Second * 5)
	}
	go ConnectSprout()