Added mongo configuration

.env.testing

@@ -14,6 +14,10 @@ DB_DATABASE=postgres
 DB_USERNAME=postgres
 DB_PASSWORD=secret
 
+DB_MONGO_HOST=mongo
+DB_MONGO_USERNAME=mongo
+DB_MONGO_PASSWORD=password
+
 BROADCAST_DRIVER=log
 CACHE_DRIVER=file
 QUEUE_CONNECTION=sync
@@ -21,15 +25,15 @@ SESSION_DRIVER=file
 SESSION_LIFETIME=120
 
 REDIS_HOST=127.0.0.1
-REDIS_PASSWORD=null
+REDIS_PASSWORD=
 REDIS_PORT=6379
 
 MAIL_DRIVER=smtp
 MAIL_HOST=mail.leenooks.vpn
 MAIL_PORT=25
-MAIL_USERNAME=null
-MAIL_PASSWORD=null
-MAIL_ENCRYPTION=null
+MAIL_USERNAME=
+MAIL_PASSWORD=
+MAIL_ENCRYPTION=
 MAIL_AUTO_EMBED_METHOD=base64
 
 PUSHER_APP_ID=