dhcp-done: Add daemon

Used to communicate with cloud utilities monitoring the netboot status
of the machine. Started once the netboot has completed in order to
provide status.

Change-Id: I6eb8b5a0048e3a9d5d4f56adae42ef5aff2c2bab
Signed-off-by: William A. Kennington III <wak@google.com>
8 files changed