refactor(recipe): move GetComposeFiles to new struct

cli/app/upgrade.go

@@ -231,7 +231,7 @@ recipes.
 			app.Env[k] = v
 		}
 
-		composeFiles, err := recipePkg.GetComposeFiles(app.Recipe, app.Env)
+		composeFiles, err := r.GetComposeFiles(app.Env)
 		if err != nil {
 			log.Fatal(err)
 		}