Correct Openstack version text for release
Correct Openstack version text for release

This change updates the Openstack names for the releases for 8.0.

Change-Id: I8f870462a8f3d8e11f79d680408777c89c8e2aa7
Closes-Bug: #1503663

huntxu/fuel-web,eayunstack/fuel-web,huntxu/fuel-web,stackforge/fuel-web,eayunstack/fuel-web,huntxu/fuel-web,eayunstack/fuel-web,stackforge/fuel-web,stackforge/fuel-web,huntxu/fuel-web,eayunstack/fuel-web,eayunstack/fuel-web,huntxu/fuel-web