e2e: Fix NGINX helm uninstall

test/e2e-nginx-cleanup.sh

@@ -3,10 +3,10 @@
 set -o errexit
 
 echo '>>> Deleting NGINX Ingress'
-helm delete --purge nginx-ingress
+helm delete nginx-ingress -n ingress-nginx
 
 echo '>>> Deleting Flagger'
-helm delete --purge flagger
+helm delete flagger -n ingress-nginx
 
 echo '>>> Cleanup test namespace'
 kubectl delete namespace test --ignore-not-found=true

test/e2e-nginx-custom-annotations.sh

@@ -25,8 +25,7 @@ echo '>>> Loading Flagger image'
 kind load docker-image test/flagger:latest
 
 echo '>>> Installing Flagger'
-helm install ${REPO_ROOT}/charts/flagger \
---name flagger \
+helm upgrade -i flagger ${REPO_ROOT}/charts/flagger \
 --namespace ingress-nginx \
 --set prometheus.install=true \
 --set ingressAnnotationsPrefix="custom.ingress.kubernetes.io" \