Add packet cluster to interdomain testing

[d-uzlov]

Currently we run interdomain testing with 3 clusters: 1 in GKE, 1 in AWS, 1 in AKS. We can add Packet-based cluster to the list.

Required steps:

• Copy new cluster setup from the integration-k8s-packet repo (packet setup scripts in this repo are outdated)
• Modify setup scripts to enable LoadBalancer type services
• Modify GitHub CI to use packet cluster during testing
• • Create and cleanup packet clusters along other ones
• • Run several interdomain test jobs, with different selected clusters

Currently the CI requires 2 main clusters and one auxiliary cluster for the floating registry. We can't use all 4 clusters in 1 test run. I think we can set up 2 separate tests:

• GKE + AWS, with floating registry in AKS
• • This is the same as what we are using now
• AKS + Packet, with floating registry in GKE
• • We don't test data plane for AKS in our current test, so it would be useful to use AKS as one of the main clusters

Blocked by:

• https://github.com/networkservicemesh/deployments-k8s/issues/10021

[denis-tingaikin]

GKE + AWS, with floating registry in AKS This is the same as what we are using now AKS + Packet, with floating registry in GKE We don't test data plane for AKS in our current test, so it would be useful to use AKS as one of the main clusters

Please note that we need to run also floating interdomain tests and we need think about 3 clusters setup