Related-Bug: #1390392
1. Clear vmware session while logging out WebUI session
2. Added 'Private VLAN' text field in Create Network popup in case of vCenter
   orchestration mode. It will not be visible in Edit Network popup

Change-Id: I3fb9ebb5cd069a1c5ae2878a2a4adea47a4a4ef1
Merge "Related-Bug: #1390392 1. Clear vmware session while logging out WebUI session 2. Added 'Private VLAN' text field in Create Network popup in case of vCenter    orchestration mode. It will not be visible in Edit Network popup"