Fix test-cmd kubectl_run flake

It is unrealistic to expect a cascading delete to immediately take
effect. Somehow this test got away with it for a while, but we
have finally reached a point where apiserver performance has changed
just enough to expsoe this flaky expectation.

Author: spiffxp

test/cmd/run.sh

@@ -36,7 +36,7 @@ run_kubectl_run_tests() {
   # Clean up
   kubectl delete jobs pi "${kube_flags[@]}"
   # Post-condition: no pods exist.
-  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
+  kube::test::wait_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
 
   # Pre-Condition: no Deployment exists
   kube::test::get_object_assert deployment "{{range.items}}{{$id_field}}:{{end}}" ''