Need a ServiceInstance plugin to handle svc catalog provisioned apps

[dymurray]

In OCP4, the service catalog does not exist. This means that if we try to migrate applications that have been provisioned by the svc catalog then the restore will more than likely fail for a few reasons.

1. The ServiceInstance resource will not exist on OCP4
2. The app will more than likely depend on existing svc bindings
3. The app is used to being managed by svc catalog and maybe not restore in a k8s friendly manner

We should investigate a potential plugin that can do it's best to clean up the application that includes a ServiceInstance and allows it to come up as gracefully as possible on the OCP4 side.