AppManager: Support exposing ports on public networks

Sets up [public ingress -> private ingress -> remote cluster] proxy chain

Change-Id: I6376a006b2692c31f3cb895bbfd6e373182e8824
diff --git a/core/installer/canvas-app.cue b/core/installer/canvas-app.cue
index 6843277..89546c0 100644
--- a/core/installer/canvas-app.cue
+++ b/core/installer/canvas-app.cue
@@ -28,8 +28,8 @@
 		  "name": "pgg",
 		  "size": "2Gi",
 		  "expose": [{
-		    "network": "private",
-			"subdomain": "pggp"
+		    "network": "public",
+			"subdomain": "piopio"
 		  }]
 	  }],
 	  "cluster": "asdc"