gitignore: ignore cheetah backups
gitignore: ignore cheetah backups

Signed-off-by: Steven Noonan <4068f0880b399410602d694b3cc711c8a8f4727e@uplinklabs.net>

theatrus/eve-central.com,theatrus/eve-central.com,kunwon1/kunwon1-evecentral,kunwon1/kunwon1-evecentral,theatrus/eve-central.com,theatrus/eve-central.com,kunwon1/kunwon1-evecentral,kunwon1/kunwon1-evecentral