Updated openstack/openstack
Project: openstack/tempest  37728045bc34a61d6d1b3801500d571cb0c9e5aa

javelin: fix user destruction

Use the right Python method to destroy an user:
- get the tenant_id
- get the user_id (with tenant_id)
- delete the user using user_id

Change-Id: I2121fedf563cc4d41f8ad8dfcaf55d767d87d69f