Fix restore warning message
## What does this MR do?
Fix the restore Rake task so it properly outputs the database warning. This is a pretty important warning and it was not even being output. After this fix, the output looks like the screenshot below.
![Screen_Shot_2016-06-28_at_3.53.46_PM](/uploads/d250189d39fcacd0c8ec0aacf9cd930d/Screen_Shot_2016-06-28_at_3.53.46_PM.png)
See merge request !4980