Currently Nexus VSM specific input fields like Nexus 1000v ip/user/password etc. are mandatory in UI (shows red asterisk) while adding clsuter if global config parameter 'vmware.use.nexus.vswitch' is true.
We need to amend this because we now have option to override the cloud level setting (which is from global configuration parameter set to 'true') or zone level setting (traffic lebel at zone level) at cluster level while adding cluster. Hence it makes no sense to ask user to provide VSM details, while adding cluster, when user chooses not to use Nexus 1000v for any of the traffics.
Hence need to make these fields as optional (remove the red asterisks)