* Turkey's 22 camps are home to more than 220,000 refugees
* Many refugees say camps like "prison", prefer life outside
* Aleppo just across border still bearing brunt of conflict
By Dasha Afanasieva
GAZIANTEP, Turkey, March 26 (Reuters) - Turned away three times since fleeing the bombardment of Syria's second city Aleppo in January, mother of eight Faten Darwish has given up on getting...