Installer: auto generate target service namespace in port forwards

Change-Id: Id7e0dcdd750034375c796881e86b1f3eb53e9299
diff --git a/core/installer/values-tmpl/dodo-app.cue b/core/installer/values-tmpl/dodo-app.cue
index 238b142..e9fcebe 100644
--- a/core/installer/values-tmpl/dodo-app.cue
+++ b/core/installer/values-tmpl/dodo-app.cue
@@ -57,9 +57,7 @@
 	allocator: input.network.allocatePortAddr
 	reservator: input.network.reservePortAddr
 	sourcePort: input.sshPort
-	// TODO(gio): namespace part must be populated by app manager. Otherwise
-	// third-party app developer might point to a service from different namespace.
-	targetService: "\(release.namespace)/soft-serve"
+	serviceName: "soft-serve"
 	targetPort: 22
 }]