Add networking-midonet-tempest-aio-ml2-centos-7 to neutron dashboard
Add networking-midonet-tempest-aio-ml2-centos-7 to neutron dashboard

In patch [1] new non-voting job
networking-midonet-tempest-aio-ml2-centos-7 was added to neutron's
check queue.
Lets add it also to Neutron Grafana dashboard.

[1] https://review.openstack.org/#/c/649607/

Change-Id: I4c4cc9132b03cdda300149358a10bce8e579e7d6

openstack-infra/project-config,openstack-infra/project-config