Well, warriors have very good growth to accumulate hit points as they level. I was looking at my tank. 310 hit points at level 18, 340 at level 21 just using Andruil's Blessing and Lifegiver. I'd guess I'd be close to 400 without any gear changes by level 25.
Now if you want more than that, you can add in gear items like Blood Dragon Plate and the Blood Gorged Amulet. if you equipped both of those, you'd be close to 500. I don't see using level ups on Con when increasing STR and Dex does so much more, but that's me.
Awakening-you're looking at a different ballgame. Vitality maxed out will add +100 HP and paragon stout runes will add +14 con. 3 of them on armor will be +42 con, which will be good for +200 HP. This doesn't include con increases on the armor itself. It's normal for warriors in Awakening to have in the range of 700-800 HP at least. It's up to you, but I think warriors have bigger fish to fry.