fix: update connection method

[matttrach]

There are a few things in this one:

1. We update the server module to the newest version
2. We break out the downstream cluster creation in examples to their own local module
3. We use a different method of getting the downstream cluster to talk to the Rancher cluster
   • rather than modifying the DNS address to have a 10... IP we allow the public addresses of the nodes
   • so now the public IPs of the downstream cluster are allowed to talk to the Rancher load balancer
4. We added an additional check to make sure deployments are complete before calling Rancher ready
   • the Rancher webhook deployment was sometimes not ready when we were just checking nodes and pods