Let the Chef jig create clients and node roles at node creation time.
Have the jig create Chef nodes, clients, and node roles.
We no longer need to create client.pem manually.
Merge pull request #38 from VictorLowther/pull-req-master-2f1b24f34e960c236274103f8f078be858b17f88

https://github.com/crowbar/barclamp-chef/pull/38

Merged by devtool for cloudedge