Have 01-install-client.sh install any immediate prereqs we need.

Right now that is just enough to install the cstruct gem.
Merge pull request #67 from VictorLowther/pull-req-master-bd66348553d542ca5099c3c0ee4e662fe322da9f

https://github.com/crowbar/barclamp-chef/pull/67

Merged by devtool for cloudedge