Reduce infracloud-vanilla max-servers by 10
Reduce infracloud-vanilla max-servers by 10

We'd like to add infracloud-vanilla to zuulv3-dev.o.o to do so, reduce
max-servers by 10 and add an nodepool-id so each nodepool doesn't
try to clean up the others nodes.

Change-Id: I28b50a9df714db567efa93c068380966cdb65d96
Signed-off-by: Paul Belanger <e7139c8e6c4ea75cc1c287ce081b2dc0f3ab39ec@redhat.com>

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