Merge pull request #19 from crowbar/release/pebbles/master

pull changes from dell
if user specifies raw not local and there are no disks available I expect it to fails and return some sensible error, like " no raw storage available". It should not automatically switch to a different mode that is not specified by user
Stop installing python-keystone package

This is not needed since commit 6921bbb, when we moved to using
keystoneclient.middleware.auth_token.
Merge pull request #53 from MirantisDellCrowbar/release/pebbles/unstable/master

Disable fallback to "local" storage when there is no disks available
Merge pull request #54 from vuntz/no-python-keystone

Stop installing python-keystone package
webui: Only show local (or raw) options when local (or raw) is selected

Until now, we were always showing local and raw options when local or
raw was selected. They should only appear when the correct option is
selected.
Merge pull request #56 from vuntz/ui-fix

webui: Only show local (or raw) options when local (or raw) is selected