maxRetries is not applied for tasks in the store

[ivansstoyanov]

steps to reproduce
0. set sql store

1. set maxRetries to 100
2. set priority

return cb(null, input.priorityNumber)
}```
3. add task two task with priorityNumber 1,2
4. all tasks should fail (so we could test the maxRetries)

Actual
If you execute this everything works as expected.
But If you kill the queue around 53 request for the first task. And start the queue again the first task is executed again 100 times, the second task **is executed 1 time**

Expected 
2nd task should be executed 100 times
it would be nice if the first task is executed 47times