Revert "Revert "Set OVH max-servers to 0""
Revert "Revert "Set OVH max-servers to 0""

Since 2:00am ovh has problems - let's disable for now.

This reverts commit 9cb7df624850fa96e511331ed43d4e7c7e119855.

Change-Id: Ic6e9fe26fbca4fc3415c0166e75e48dc7964ef9b

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