Integration tests fail for static_routes in its current form.

This is less complicated than some of the others as there were no significant changes between 1.2 and 1.5 for static route policy.

Playing around with it, it appears that changing to vyos_config instead of cli_config fixes the problem, and it's not clear why. Other modules (notably vyos_config) use cli_config and seem to work OK. The key symptom is that the facts aren't gathered accurately.

That change may be appropriate and simple for getting this working if the problem isn't clear.