fix(schema): Use ingress default values

Ingress has some default values, like path and classname. We need to
ensure that values are taken or nil, and to apply them if they are not
set explicitally. Port is a sepcial case.

generator/katenaryfile/main.go

@@ -107,6 +107,19 @@ func getLabelContent(o any, service *types.ServiceConfig, labelName string) erro
 		return err
 	}
 	val := strings.TrimSpace(string(c))
+	if labelName == labels.LabelIngress {
+		// special case, values must be set from some defaults
+		ing, err := labelStructs.IngressFrom(val)
+		if err != nil {
+			log.Fatal(err)
+			return err
+		}
+		c, err := yaml.Marshal(ing)
+		if err != nil {
+			return err
+		}
+		val = strings.TrimSpace(string(c))
+	}
 
 	service.Labels[labelName] = val
 	return nil