istio inject fix

.gitlab-ci.yml

@@ -29,7 +29,7 @@ istio:
   script:
     - NS=$(kubectl config view --minify --output 'jsonpath={..namespace}')
     - kubectl label ns $NS istio-injection=enabled --overwrite
-    - kubectl delete -f deploy/yelb.yaml | kubectl delete -f -
+    - kubectl delete -f deploy/yelb.yaml
     - sleep 5
     - kubectl apply -f deploy/yelb.yaml