Unable to create a Schedule for Database Backup

https://bugzilla.redhat.com/show_bug.cgi?id=1099341

I've added missing route in 1st commit, 2nd one consider as quick fix, as the record variable is nil, so
```
@record.display_name
```
ends with nil error.

The 3rd issue is now with non-existing method 'schedule_depot_field_changed' AbstractController::ActionNotFound (The action 'schedule_depot_field_changed' could not be found for OpsController). You can reproduce it in 'Add a new Schedule' form when you choose some 'Type' from select drop-down list. The error is silent, so you are able to see it only in logs.

@dclarizio could you please look at it? A user is still not able to create schedule for database backup, as the 'Type' is mandatory attribute.