mark delete cascade to routes from app pending

This test wasn't testing the desired behavior/expectation.

Change-Id: Id948d6b50a5bc244a93164ed797fd72fe4428f93
Reviewed-on: http://reviews.cloudfoundry.org/13096
Tested-by: CI Master <cf-ci@rbcon.com>
Reviewed-by: Patrick Bozeman <pbozeman@vmware.com>