Move cinder multinode grenade job to check
Move cinder multinode grenade job to check

Cinder multinode grenade job seems to work fine with current Cinder
code. It should be then safe to move it to check (as non-voting) once
commit mentioned below gets merged.

Depends-On: Iab6156cc25f78e8f80b220bc93c2b2e4974a585a
Change-Id: Idf9e06f01d70b794134e440681058e9b5ad324b2

openstack-infra/project-config,Tesora/tesora-project-config,openstack-infra/project-config,Tesora/tesora-project-config