| --- |
| upgrade: |
| - | |
| Default value of config option ``CONF.placement.region`` is updated |
| from ``RegionOne`` to empty string. |
| |
| As per tempest design, if tempest conf is not having any region for |
| a service then identity region should be used. In case of placement |
| the default value is "RegionOne" which is considered as placement |
| region if region missing in tempest conf. In order to have identity |
| region to be used as default we need to change to empty string for |
| placement service. Empty string can be seen being used in other |
| services like volume, image etc. |