By Veronika Bondarenko Another major snack brand partnership is banking on nostalgia. If you’ve been following recent fast-food trends, you’ll know just how much brands are starting to bank on consumers’ nostalgia for childhood treats. Once novel partnerships between fast-food and snack-food companies are now popping up at almost every corner. That includes especially the doughnut corner, an area in which Krispy Kreme (DNUT) – Get Krispy Kreme Inc. Report has been trying to carve out some major territory. The quintessential doughnut chain this spring has released three donuts inspired by Gener…