Change Registry Label for Server to Instance
Change Registry Label for Server to Instance

The registry has OS::Nova::Server registered with a label of Server.

This is not consistent with "instance" naming in horizon.
This impacts usage in the search panel.

Before:
http://pasteboard.co/8wghjVS.png

After:
http://pasteboard.co/8whGcA1.png

Change-Id: I41e24b56afea127fdc6fc4f66d9d3b119807b649
Closes-Bug: 1569493

yeming233/horizon,ChameleonCloud/horizon,BiznetGIO/horizon,Mirantis/mos-horizon,yeming233/horizon,ChameleonCloud/horizon,Mirantis/mos-horizon,coreycb/horizon,noironetworks/horizon,sandvine/horizon,openstack/horizon,sandvine/horizon,openstack/horizon,BiznetGIO/horizon,ChameleonCloud/horizon,Mirantis/mos-horizon,wolverineav/horizon,openstack/horizon,wolverineav/horizon,sandvine/horizon,noironetworks/horizon,BiznetGIO/horizon,ChameleonCloud/horizon,bigswitch/horizon,wolverineav/horizon,Mirantis/mos-horizon,bac/horizon,noironetworks/horizon,sandvine/horizon,bigswitch/horizon,bac/horizon,bigswitch/horizon,noironetworks/horizon,openstack/horizon,yeming233/horizon,BiznetGIO/horizon,wolverineav/horizon,coreycb/horizon,bac/horizon,coreycb/horizon,bac/horizon,NeCTAR-RC/horizon,bigswitch/horizon,NeCTAR-RC/horizon,NeCTAR-RC/horizon,coreycb/horizon,NeCTAR-RC/horizon,yeming233/horizon