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
(cherry picked from commit 0144dce7)