fixup! modules can declare zero version requirements

Author: davidcheung

internal/config/moduleconfig/module_config.go

@@ -1,6 +1,7 @@
 package moduleconfig
 
 import (
+	"errors"
 	"fmt"
 	"io/ioutil"
 	"log"
@@ -136,7 +137,11 @@ func LoadModuleConfig(filePath string) (ModuleConfig, error) {
 
 		log.Fatal("")
 	}
-	// ValidateZeroVersion(config)
+
+	if !ValidateZeroVersion(config) {
+		constraint := config.ZeroVersion.Constraints.String()
+		return config, errors.New(fmt.Sprintf("Module's zero requirement not satisfied: expected %s  received: %s", constraint, version.AppVersion))
+	}
 	return config, nil
 }