add environment

environment/istio-gateway.yaml

@@ -0,0 +1,33 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: istio-gateway
+  namespace: argocd
+spec:
+  project: foundation
+  source:
+    repoURL: https://istio-release.storage.googleapis.com/charts
+    targetRevision: 1.28.0
+    chart: gateway
+    helm:
+      releaseName: istio-gateway
+      values: |
+        service:
+          type: LoadBalancer
+          ports:
+            - name: http2
+              port: 80
+              targetPort: 8080
+            - name: https
+              port: 443
+              targetPort: 8443
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: istio-system
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true
+