I am trying to install OpenStack Ansible (AIO) in a VM using the official guides at OpenStack Ansible project. The installation fails right after i issue the command "scripts/bootstrap-ansible.sh" with tehe following error :

fatal: [localhost] => One or more undefined variables: 'dict object' has no attribute u'sdb

I am doing anything wrong ? Or would there be some troubleshooting steps ?

** I tried installation so far with both liberty and mitaka .... yet no luck. Thanks in advance.