Ability to specify a directory for stealing Service Account Token

[r0binak]

When you run Pod with a fully mounted host filesystem via hostPath there is no way to specify a path to /var/lib/kubelet, even though it may be in the path /host/var/kubelet. This will be useful when it is possible to use hostPath but there is no way to automate the use of Service account token from other Pods found on the Node.

[r0binak]

I think that somewhere in this place you need to allow the user to set a custom directory. Leave /var/lib/kubelet/pods/ by default.

peirates/config.go

Line 344 in a1ef259

// Exit if /var/lib/kubelet/pods does not exist