Configurable sketch egress and ingress in SoP

[willk]

We need to provide an easy way for an operator to pick an edge sketch to route specific traffic through. We can accomplish this with a VPN, or rules for connecting to specific services via a proxy->middle->edge.

This needs to be reflected in our standard operating procedure on how this is all handled.

We really need specific edge sketch for egress (operator usage) and ingress (an implant coming back to us) depending on how an adversary sets up their infra.

Examples:

1. Operator can pick which edge to browse the internet from
2. Operator can pick which edge to connect to a service from
3. Operator can select which edge sketch to receive implant traffic from