There is a race condition when running testr in parallel between the XML and JSON versions of: test_aggregate_add_host_create_server_with_az because a host can only be in one availability zone at a time. This commit adds file locking to that test using oslo lockutils so that the XML and JSON tests will never run at the same time. part of blueprint speed-up-tempest Change-Id: I1ce76ccd9c57d8f44f19958498c632910112528b
Copy config.ini.sample to config.ini, and update it to reflect your environment.