Rename workloads tasks
Rename workloads tasks

* Rename workloads tasks because they were renamed here
  https://review.openstack.org/#/c/207835/

Change-Id: I987b90ddd43a1975aacb66b0c086fce214acbb13
Closes-Bug: 1434498
Depends-On: Iff45efd4575c3bc96ac595717e052a9af9a19f71
SmartInfrastructures/fuel-web-dev,huntxu/fuel-web,stackforge/fuel-web,huntxu/fuel-web,stackforge/fuel-web,eayunstack/fuel-web,eayunstack/fuel-web,eayunstack/fuel-web,SmartInfrastructures/fuel-web-dev,eayunstack/fuel-web,SmartInfrastructures/fuel-web-dev,huntxu/fuel-web,SmartInfrastructures/fuel-web-dev,SmartInfrastructures/fuel-web-dev,huntxu/fuel-web,stackforge/fuel-web,huntxu/fuel-web,eayunstack/fuel-web