add debugging log switch for crawler process

app/config/appConfig.js

@@ -28,6 +28,8 @@ const MAX_REAL_ESTATES_IN_EMAIL =
 const MAX_REAL_ESTATES_IN_FIRST_EMAIL =
   parseInt(process.env.MAX_REAL_ESTATES_IN_FIRST_EMAIL) || 5;
 
+const PRINT_CRAWLER_DEBUG = process.env.PRINT_CRAWLER_DEBUG_INFO || 0;
+
 module.exports = {
   APP_PORT,
   APP_URL,
@@ -36,5 +38,6 @@ module.exports = {
   STOP_CRAWLER,
   AWS_EMAIL_CONFIG,
   MAX_REAL_ESTATES_IN_EMAIL,
-  MAX_REAL_ESTATES_IN_FIRST_EMAIL
+  MAX_REAL_ESTATES_IN_FIRST_EMAIL,
+  PRINT_CRAWLER_DEBUG
 };