Add a chef-solo jig.

This lets us use chef-solo for internal Crowbar things, and allow other
things to use chef-client and chef-server if they need to.
Merge pull request #74 from VictorLowther/pull-req-master-bbc20a06dbbdfd0b2f1725d18b4220bf28a9a536

https://github.com/crowbar/barclamp-chef/pull/74

Merged by devtool for cloudedge