If we have user override on quiz setting (number of attempts), quiz completion doen't respect that.

How to reproduce:

1. Create a quiz
1.1 Set number of attempts to 1
1.2 Set Activity Completion with settngs:
1.2.1 completionusegrade = 1
1.2.2 completionpass = 1
1.2.3 completionattemptsexhausted = 1
2. Fail one attempt of the quiz under "User"
3. Look on the red icon completion-auto-fail next to the quiz on the course page
4. Add quiz user override for "User": number of attempts = 2
5. Login as "User" and look on the red icon completion-auto-fail next to the quiz on the course page

How it should be:

1-4. Same
5. Login as "User" and look on the empty icon completion-auto-n next to the quiz on the course page