Added unsupported platform "Unknown"

Default to it if ohai doesn't return anything useful. This is to make crowbar
work on paravirtualized Xen guests. Which doesn't set a useful product_name.
Merge pull request #34 from rhafer/master

Added "unsupported" platform "Unknown"
add .gitignore for barclamp repos with .lock, etc
Merge pull request #36 from waynepallen/pull-req-master-13c9674cb9dc84435364b22b62c8277ca347e74c

Add .gitignore file to barclamp repo; ignore Gemfile.lock files, etc. [1/4]
Note that this barclamp requires the chef and network barclamps.
Merge pull request #37 from VictorLowther/pull-req-master-b4a5d683f0e2f729f8e7cc489c8f4afaac0e6fac

Merged by devtool for VictorLowther
add ipmi barclamp engine structure
Correct parent class of barclamps_controller in ipmi
Merge pull request #38 from waynepallen/pull-req-master-a12ea091bfb90630117f1d475262cf1a10c1c39b

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

Merged by devtool for VictorLowther