Add default 'nil' values for the openstack attributes
Attempt to deal with older distros w/o clients in their package systems.
Added the cinder client
Needs the "python" cookbook for python_pip
... and install python / pip
... but not that way
...
Try another way ...
Make sure we have the python build dependencies ...
Version bump
Merge pull request #18 from nectar-cookbooks/debug

Fixes for issues #16 and #17