Change ignore-errors to ignore_errors
Change ignore-errors to ignore_errors

Needed for coverage 4.0

Change-Id: Id92b6975cf32abebf54db3df69ca65b3ab0efd33

openstack/compass-core,stackforge/compass-core,stackforge/compass-core,openstack/compass-core,stackforge/compass-core,stackforge/compass-core,openstack/compass-core,openstack/compass-core