Correct the word orchestation to orchestration
Correct the word orchestation to orchestration

Heat policy rule key is orchestration.

Change-Id: Iad00116ff92247961283d3c5ad6c6c688ea58881
Closes-Bug: #1681163

NeCTAR-RC/horizon,ChameleonCloud/horizon,openstack/horizon,yeming233/horizon,openstack/horizon,yeming233/horizon,openstack/horizon,noironetworks/horizon,NeCTAR-RC/horizon,BiznetGIO/horizon,noironetworks/horizon,ChameleonCloud/horizon,noironetworks/horizon,ChameleonCloud/horizon,NeCTAR-RC/horizon,noironetworks/horizon,BiznetGIO/horizon,yeming233/horizon,ChameleonCloud/horizon,NeCTAR-RC/horizon,BiznetGIO/horizon,yeming233/horizon,BiznetGIO/horizon,openstack/horizon