Create test for Loner Jobs

For some reason, even though the set command accepts ttl's (https://github.com/nicolasff/phpredis#set), it wasn't setting it. Tried with redis 2.6.11 and 2.6.12, though the problem is probably in the redis library.

Since it mentions on the phpredis doc, that it's preferred to use setex for expirations, I changed it.

I left the commit with the failing test previous to the check in case you want to check also.

Open to any comments.