Disable gate-grenade-dsvm-ceilometer in stable/juno
Disable gate-grenade-dsvm-ceilometer in stable/juno

Doing a grenade from icehouse to juno just doesn't make sense as we
deleted all the icehouse branches.

Closes-Bug: 1497077
Change-Id: I0d34c1dc99b92f3cd6a3389188554c38292862c2

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