tests: Add better test coverage for nodejs SDK

[metral]

Currently we have the following nodejs examples/tests:

We should also be testing commits against the following use-cases:

• replace-secgroup:
  • Stand up a cluster with an external nodeSecurityGroup secgroup to a new NodeGroup, on an update remove the external secgroup to fall back on the cluster's default nodeSecurityGroup, and verify if the patch works as expected with the cluster remaining in a running state.
  • Update: Being added in Expand nodejs SDK tests coverage, and add Kubernetes Smoke Tests for examples & tests #130 (M23)
• add-more-subnets:
  • Stand up a cluster, and then swap out its config (e.g. go from using 2 subnets -> 3 subnets), and issue another update to see if the patch works as expected with the cluster remaining in a running state.
  • Update: Being added in Expand nodejs SDK tests coverage, and add Kubernetes Smoke Tests for examples & tests #130, but not enabled yet due to dep on aws-auth configmap does not get re-created after a cluster replacement, preventing nodes from joining the cluster #107
  • Update (06/06/2019): Being enabled in tests(cluster): enable test to replace cluster by adding more subnets #150 (M24)
• upgrade-from-latest:
  • Stand up a cluster using the latest, known release available. Then apply and test the patch on another update to the existing cluster to see if the patch works as expected with the cluster remaining in a running state.
  • Being tracked in Refactor test options, and add new tests that use RunUpdateTest #241 (M27)

Note: To verify the k8s cluster "remains in a running state," a small scoped smoke-test testing the following would suffice:

• The aws-auth k8s ConfigMap can be retrieved, is correct, and can be correctly used by Nodes to join the cluster with no interruptions.
• All existing k8s nodes remain RUNNING
• All existing k8s pods remain RUNNING

[metral]

Closing as this has been complete for a while, and our smoke tests validate all pods scheduled are in the RUNNING or SUCCEEDED state.