Add notifications for all stable branches for kolla
Add notifications for all stable branches for kolla

Add stable/kilo, stable/juno, and stable/icehouse to Kolla
IRC notifications.

Change-Id: I3c8ac3adb56a7bc85bad96a198e23d2d4c4978a5
citrix-openstack/project-config,Tesora/tesora-project-config,anbangr/osci-project-config,dongwenjuan/project-config,citrix-openstack/project-config,noorul/os-project-config,openstack-infra/project-config,anbangr/osci-project-config,coolsvap/project-config,openstack-infra/project-config,coolsvap/project-config,dongwenjuan/project-config,Tesora/tesora-project-config,noorul/os-project-config