Let unit tests run in different namespaces to avoid resource conflict

test/test_utils.sh

@@ -75,8 +75,8 @@ setupIngressController() {
 removeIngressController() {
     # set up NGINX ingress controller
     kubectl delete clusterrolebinding cluster-admin-binding || true
-    kubectl delete -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/nginx-0.25.1/deploy/static/mandatory.yaml || true
     kubectl delete -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/nginx-0.25.1/deploy/static/provider/cloud-generic.yaml || true
+    kubectl delete -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/nginx-0.25.1/deploy/static/mandatory.yaml || true
 }
 
 build_and_push_go_mod_cache_image() {