Fix use of insecure work path on nodes.
Fix use of insecure work path on nodes.

Previously, the program blindly deployed to "/tmp/chef-solo" -- which is
insecure and bad because an attacker could create this directory and add
files to it that they'd like to have run as root.

The new approach creates a "/var/littlechef" directory, which only root
can create and use.

tobami/littlechef,wilddog64/littlechef,wilddog64/littlechef,tobami/littlechef,tobami/littlechef,wilddog64/littlechef