Make tempest plugin sanity job non voting

Tempest plugin sanity job is failing with below
error
- https://zuul.opendev.org/t/openstack/build/2c2ed82bd12948b98d9ea7e2ebe625a8

  from os_ken.tests.integrated.common import quagga
ImportError: cannot import name 'quagga' from 'os_ken.tests.integrated.common'

To unblock the Tempest gate, making it non voting until plugin is fixed.

Change-Id: I2c0f3fa92b4a0ad98698b755b40614a85230756f
1 file changed