Previously, the code to infer implicit dependencies between Neutron resources could fail given invalid input, and threw the following error:
BadRequest: Invalid input for port_id. Reason: 'test-stack-instance_port-kz2mdpj4wbpq-port-5etr6o77ho7f' is not a valid UUID.
This failure could occur after validation and thus recurred every time the stack was loaded. The user was unable to delete stack after an error of this type, since the stack could not be loaded.
This patch ignores dependencies for the incorrect resource, so that the resource can be deleted. As a result, user can now delete the stack after the error.