Slowly turn rax-ord back on in nodepool
Slowly turn rax-ord back on in nodepool

The provider indicates they've completed some very recent
maintenance on private circuits between ORD and DFW regions, so our
previously witnessed network issues may be solved by that. If this
still doesn't work, we'll revert again.

Change-Id: I88f1634b04869e3223481002c4f99a10e5351540
Related-Bug: #1298006

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