Hi,
The university won't have to do anything, you may be eligible for a fund for a small fridge or something so you can keep your supplies in your own room. Alternatively, pick on up from Tesco's before you go!
Ultimately you're an adult so your diabetes is your responsibility, not the responsibility of the university.
Although, it is best to advise them you are diabetic, along with those you share halls with etc.
When I was at uni I kept my clinics and reviews at my hospital at home and just rearranged appointments so they coincided with the end of term etc.
In terms of getting access to diabetes supplies, I was going home fairly regularly so just kept things as they were. Alternatively you can register with a GP in your uni town and get your repeats set up there.
HbA1c wise, that will only change if your control changes ha.
You'll probably be drinking and partying a bit more, especially during the first year, just follow the golden rules of testing before bed, carbs before sleep etc.
I wouldn't fret about it, attending university didn't change my diabetes at all.