Show plugin only if vCenter used
Show plugin only if vCenter used

Hide plugin if vCenter not used

Change-Id: I870436377dda5386363b647d8e3a4b6cc05bfe9f
Closes-bug: #1569372

stackforge/fuel-plugin-vmware-dvs,stackforge/fuel-plugin-vmware-dvs,stackforge/fuel-plugin-vmware-dvs,stackforge/fuel-plugin-vmware-dvs