gerritbot: add missing stable branches for #openstack-telemetry
gerritbot: add missing stable branches for #openstack-telemetry

Add missing stable branches notifications for #openstack-telemetry
channel.

Change-Id: Ic198ede3a45a52cca8ce3d00efe3c9e673f993f8

dongwenjuan/project-config,openstack-infra/project-config,openstack-infra/project-config,dongwenjuan/project-config,Tesora/tesora-project-config,Tesora/tesora-project-config