* add no resources found message to rollout-status command
* return err if not nil before no resource message
Kubernetes-commit: a5575425b039bf7c15dfaa9a7acf257fdc4fde3f
This commit makes adjustments in rollout status command to make it
unit testable. In addition to that, unit tests for rollout status
command is added.
Kubernetes-commit: f21e5983a95ab4e72aa0ddd9ae465a613490b422