DodoApp: Individually configure dev-vm code-server, ssh, vpn

Refactor openPortMap handling a bit.

Change-Id: I2ea4d4c9b090f2791700149dda6cc8dcd8ab6820
diff --git a/core/installer/values-tmpl/virtual-machine.cue b/core/installer/values-tmpl/virtual-machine.cue
index 63cacf0..7416e28 100644
--- a/core/installer/values-tmpl/virtual-machine.cue
+++ b/core/installer/values-tmpl/virtual-machine.cue
@@ -35,7 +35,9 @@
 				}
 			}
 			if input.codeServerEnabled != _|_ {
-				codeServerEnabled: input.codeServerEnabled
+				codeServer: {
+					enabled: input.codeServerEnabled
+				}
 			}
 		}
 	}