Changed the label "Private VLAN" in Create network popup in case of
vCenter project.
Instead, asking for "Primary VLAN" & "Secondary VLAN" and will be using
only "Secondary VLAN" for configuring port group on vCenter

Change-Id: I1b4f02d95bb7913c9a087df0fca3a1cf8fc12c85
Merge "Changed the label "Private VLAN" in Create network popup in case of vCenter project. Instead, asking for "Primary VLAN" & "Secondary VLAN" and will be using only "Secondary VLAN" for configuring port group on vCenter"