policies: add an official 'l3-bgp' bug tag
policies: add an official 'l3-bgp' bug tag

Change-Id: I342e97461fdd061d7dcc3eeeae744d0fc87de608

igor-toga/local-snat,huntxu/neutron,klmitch/neutron,eayunstack/neutron,MaximNevrov/neutron,cloudbase/neutron,sebrandon1/neutron,bigswitch/neutron,bigswitch/neutron,eayunstack/neutron,cloudbase/neutron,mahak/neutron,igor-toga/local-snat,mahak/neutron,mahak/neutron,openstack/neutron,openstack/neutron,huntxu/neutron,noironetworks/neutron,openstack/neutron,wolverineav/neutron,sebrandon1/neutron,klmitch/neutron,MaximNevrov/neutron,wolverineav/neutron,noironetworks/neutron