GetTemplateByName with zoneid constraint fails on template in multiple zones

Using `GetTemplateByName` on a template that is available in multiple zones results in

```
There is more then one result for Template UUID: 06145677-058a-456a-89a0-af4afd6fffcf!
```

The problem is that the function calls `GetTemplateID` with the zoneid constraint, and then calls `GetTemplateByID` without a zoneid contraint.