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

Needed for coverage 4.0

Change-Id: Ie1c126adf2fd0d0c36ee4e976527650dcb530d9b

stackforge/monasca-api,openstack/monasca-api,openstack/monasca-api,sapcc/monasca-api,stackforge/monasca-api,stackforge/monasca-api,sapcc/monasca-api,sapcc/monasca-api,openstack/monasca-api,stackforge/monasca-api