Revert "Temporarily disable k8s-test-suite (#16606)" (#16608)

This reverts commit be7ff20.

## Summary & Motivation

Re-enable k8s tests after aws is back up

## How I Tested These Changes

Stacked a commit
c9c3f7c
that edited dagster-k8s over this and ran:
https://buildkite.com/dagster/dagster/builds/66467

.buildkite/dagster-buildkite/dagster_buildkite/steps/integration.py

@@ -32,8 +32,7 @@ def build_integration_steps() -> List[BuildkiteStep]:
     # test suites
     steps += build_backcompat_suite_steps()
     steps += build_celery_k8s_suite_steps()
-    # schrockn (2023-09-18) Temporarily due to aws incident
-    # steps += build_k8s_suite_steps()
+    steps += build_k8s_suite_steps()
     steps += build_daemon_suite_steps()
 
     return steps