Change openstack-dev to openstack-discuss
Change openstack-dev to openstack-discuss

Mailinglists have been updated. Openstack-discuss replaces openstack-dev.

Change-Id: I37729b5a9f44302cc149340b3c174e98a04062ac

stackforge/monasca-log-api,openstack/monasca-log-api,stackforge/monasca-log-api,openstack/monasca-log-api,openstack/monasca-log-api,stackforge/monasca-log-api