Turn healthnmon unittests to non-voting.
Turn healthnmon unittests to non-voting.

Change-Id: Ife1af12abc24fb5dd58bb221f7661aeb24198165
Reviewed-on: https://review.openstack.org/17999
Reviewed-by: Jeremy Stanley <98883b97e35b7bb1ac282bb863f2e9d917db0454@yuggoth.org>
Approved: Monty Taylor <37c07a49ee3d5191376d758eb1d8298b34456b8e@inaugust.com>
Reviewed-by: Monty Taylor <37c07a49ee3d5191376d758eb1d8298b34456b8e@inaugust.com>
Tested-by: Jenkins

citrix-openstack/project-config,noorul/os-project-config,open-switch/infra_project-config,citrix-openstack/project-config,coolsvap/project-config,anbangr/osci-project-config,openstack-infra/project-config,open-switch/infra_project-config,dongwenjuan/project-config,noorul/os-project-config,osrg/project-config,openstack-infra/project-config,dongwenjuan/project-config,anbangr/osci-project-config,Tesora/tesora-project-config,osrg/project-config,coolsvap/project-config,Tesora/tesora-project-config