Updated openstack/openstack
Project: openstack/keystone  1f451f0058eedc1cd11ea40afe82e9766de50daa

Use correct name of oslo debugger script

As of oslotest 1.2.0 the oslo debugger script dropped the .sh
extension. This patch corrects the use the script name in tox.ini

Change-Id: If36e727332af82c8a45af7306f55753d72983623