Adds kexec-tools

[thebsdbox]

This adds the kexec tools into the tink-worker image. We will need to determine how best we allow another image to call the kexec.. might be time to expose a socket and a simple API.

[gianarb]

We will need to determine how best we allow another image to call the kexec.. might be time to expose a socket and a simple API.

In italian we say: "l'appetito vien mangiando!". it translates to "the more you get the more you want"