Merge pull request kubernetes#74338 from BenTheElder/testcmdshellcheck

make test/cmd/delete.sh pass shellcheck

Author: k8s-ci-robot

hack/.shellcheck_failures

@@ -133,7 +133,6 @@
 ./test/cmd/core.sh
 ./test/cmd/crd.sh
 ./test/cmd/create.sh
-./test/cmd/delete.sh
 ./test/cmd/diff.sh
 ./test/cmd/discovery.sh
 ./test/cmd/generic-resources.sh

test/cmd/delete.sh

@@ -36,9 +36,9 @@ run_kubectl_delete_allnamespaces_tests() {
 
   # no configmaps should be in either of those namespaces
   kubectl config set-context "${CONTEXT}" --namespace="${ns_one}"
-  kube::test::get_object_assert configmap "{{range.items}}{{$id_field}}:{{end}}" ''
+  kube::test::get_object_assert configmap "{{range.items}}{{${id_field:?}}}:{{end}}" ''
   kubectl config set-context "${CONTEXT}" --namespace="${ns_two}"
-  kube::test::get_object_assert configmap "{{range.items}}{{$id_field}}:{{end}}" ''
+  kube::test::get_object_assert configmap "{{range.items}}{{${id_field:?}}}:{{end}}" ''
 
   set +o nounset
   set +o errexit