Revert "checkpoint: make run func generic"
Revert "checkpoint: make run func generic"

This reverts commit db0d7316d3352d184b38a3c56c49820e12136313.

ericchiang/bootkube,ericchiang/bootkube,hongchaodeng/bootkube,diegs/bootkube,kubernetes-incubator/bootkube,ericchiang/bootkube,dghubble/bootkube,dghubble/bootkube,diegs/bootkube,diegs/bootkube,kubernetes-incubator/bootkube,kubernetes-incubator/bootkube,hongchaodeng/bootkube,dghubble/bootkube,hongchaodeng/bootkube