This item is about testing various different connection patterns with Knative Services and document what works today and what doesn't. In particular we'd like to test.

namespace A: Not in the SMCP of knative-serving-ingress
namespace B: In the SMCP of knative-serving-ingress
namespace C: In the SMCP but added manually (not via creating a ksvc)

1. k8s deployment in A connects to ksvc in B
2. ksvc in B connects to k8s deployment in A
3. k8s deployment in C connects to ksvc in B
4. ksvc in B connects to k8s deployment in C