The 'service_name' property is a holdover from when there was a common
role used to install all OpenStack services. This is now a default
variable within each individual role. Similarly, the 'log_directory'
property for galera containers is now handled by the 'log_dirs' variable
within its playbook.
The dynamic inventory script has been updated to create an empty
'properties' dict for any container skeletons within the environment
that do not have one already defined.
Change-Id: Icd852f24251c1cef0fa162d33e2422be83e0a833
4a35fe9ea2