Re-enable upgrade test in Travis-CI
Re-enable upgrade test in Travis-CI

Fixes #676.

SpriteLink/NIPAP,garberg/NIPAP,bbaja42/NIPAP,fredsod/NIPAP,SoundGoof/NIPAP,plajjan/NIPAP,fredsod/NIPAP,ettrig/NIPAP,fredsod/NIPAP,garberg/NIPAP,plajjan/NIPAP,SpriteLink/NIPAP,ettrig/NIPAP,ettrig/NIPAP,bbaja42/NIPAP,bbaja42/NIPAP,bbaja42/NIPAP,plajjan/NIPAP,SoundGoof/NIPAP,SpriteLink/NIPAP,plajjan/NIPAP,garberg/NIPAP,bbaja42/NIPAP,bbaja42/NIPAP,SoundGoof/NIPAP,ettrig/NIPAP,SoundGoof/NIPAP,fredsod/NIPAP,garberg/NIPAP,SpriteLink/NIPAP,SoundGoof/NIPAP,ettrig/NIPAP,SpriteLink/NIPAP,fredsod/NIPAP,fredsod/NIPAP,garberg/NIPAP,ettrig/NIPAP,SoundGoof/NIPAP,garberg/NIPAP,plajjan/NIPAP,SpriteLink/NIPAP,plajjan/NIPAP