AppManager: Add API endpoint to install dodo app

Refactors cue definitions.

Next steps:
* Needs some cleanup, namespace is hard coded ...
* Maybe merge with regular install API
* Support exposing ports across clusters

Change-Id: Ibfc3c3f742b61f2c5874012fe6c77b958eae81d9
diff --git a/core/installer/values-tmpl/url-shortener.cue b/core/installer/values-tmpl/url-shortener.cue
index 1fa70c4..9f401fb 100644
--- a/core/installer/values-tmpl/url-shortener.cue
+++ b/core/installer/values-tmpl/url-shortener.cue
@@ -69,7 +69,7 @@
 		}
 	}
 
-		volumes: data: size: input.storageSize
+		volume: data: size: input.storageSize
 
 	helm: {
 		"url-shortener": {
@@ -82,7 +82,7 @@
 					pullPolicy: images.urlShortener.pullPolicy
 				}
 				portName: _httpPortName
-				persistentVolumeClaimNama: volumes.data.name
+				persistentVolumeClaimNama: volume.data.name
 				requireAuth: input.auth.enabled
 			}
 		}