WIP: Update to use the transparent proxy flow for principal propagation

principal-prop-on-prem/app-router/k8s/config.yaml

@@ -1,4 +1,18 @@
 apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: destinations
+data:
+  destinations: >-
+    [
+        {
+          "name": "on-prem-backend-tp",
+          "url": "http://principal-prop-on-prem-dest.sap-transp-proxy-system",
+          "forwardAuthToken": true
+        }
+    ]
+---
+apiVersion: v1
 data:
   xs-app.json: |-
     {
@@ -10,9 +24,9 @@ data:
         "routes": [
             {
                 "source": "^/sap/com/onprem/(.*)$",
-                "destination": "on-prem-backend",
+                "destination": "on-prem-backend-tp",
                 "target": "$1",
-                "authenticationType": "xsuaa"
+                "authenticationType": "none"
             }
         ]
     }

principal-prop-on-prem/app-router/k8s/deployment.yaml

@@ -34,7 +34,7 @@ spec:
         app: app-router
     spec:
       containers:
-      - image: sapse/approuter:11.3.2
+      - image: sapse/approuter:19.0.0
         name: app-router
         ports:
         - containerPort: 5000
@@ -47,12 +47,6 @@ spec:
         - name: xsuaa-credentials
           mountPath: /etc/secrets/sapcp/xsuaa/principal-prop-on-prem-xsuaa
           readOnly: true
-        - mountPath: /etc/secrets/sapcp/destination/on-prem-backend
-          name: destination-credentials
-          readOnly: true
-        - mountPath: /etc/secrets/sapcp/connectivity/connectivity-service-binding
-          name: connectivity-proxy-details
-          readOnly: true
         env:
         - name: CLUSTER_DOMAIN
           value: {your-cluster-domain}
@@ -62,6 +56,13 @@ spec:
           value: "true"
         - name: DEV_ENV_TRACES
           value: "true"
+        - name: destinations
+          valueFrom:
+            configMapKeyRef:
+              name: destinations
+              key: destinations
+        - name: PLATFORM_COOKIE_NAME
+          value: "KYMA_APP_SESSION_ID"
       volumes:
       - name: approuter-config-volume
         configMap:

principal-prop-on-prem/app-router/k8s/destination-cr.yaml

@@ -0,0 +1,7 @@
+apiVersion: destination.connectivity.api.sap/v1
+kind: Destination 
+metadata:
+  name: principal-prop-on-prem-dest 
+spec:   
+  destinationRef:
+    name: "on-prem-backend"