feat: add basic barbican chart

[v1k0d3n]

Kubernetes Version (output of kubectl version): N/A

Helm Client and Tiller Versions (output of helm version): N/A

Development or Deployment Environment?: N/A

Release Tag or Master: N/A

Expected Behavior: N/A

What Actually Happened: N/A

How to Reproduce the Issue (as minimally as possible): N/A

Any Additional Comments:
another chart that we would like to deliver is a basic barbican chart. the barbican chart can start much like the other openstack-helm charts started, with a goal of improving them over time.

[v1k0d3n]

i'm going to work on this chart :)

[RichWellum]

I'd be interested in looking at this - seems like a good starter/learning point. @v1k0d3n