[travis] Fixed the user/pass

.travis.yml

@@ -8,7 +8,7 @@ services:
   - mongodb
 
 before_script:
-  - mongo mydb_test --eval 'db.addUser("travis", "test");'
+  - mongo mydb_test --eval 'db.addUser("test", "test");'
 
 notifications:
   irc: "irc.freenode.org#observe.it"