Updated openstack/openstack
Project: openstack/taskflow  a306fa94036404bda2181717b5b623f1590e56cf

Allow for the notifier to provide a 'details_filter'

When a notifier is being used for retry atoms and for
task atoms it is useful to allow a filter callback to
be provided that will skip notification depending on
whether the details matches or not (so that task or
retry notifications can proceed).

Part of fix for bug 1395966

Change-Id: If03005c253c3f540d2c33faf7a7474a5fde9dcdd