Ingris and Gateway API: Name Spaces

With gateway p i, we've made it so really each piece of the stack can exist in a different name space. So for example, gateways may exist in a intra structure named space. And then each gateway can describe which name spaces it trust for which domains. The people do use them. I think this is something has naturally evolved, as we've seen how cobernetties is actually used,. That name spaces really provide that boundary for multitenant use cases.