Added API to attach/detach port using nova API.

Change-Id: Iefada05f9328ee99f4d69d517e5ab319b0ee987d
Added first cut of working code for Port.
- Read Port.
- Create Port.
- Edit Port.
- Delete Port.

Change-Id: I9e14c33bdfe4bf7e49854f0d49a146fd26efac27
Related-Bug: #1390392
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: Ia403b49a1914a63cba44fd3b87d3ed79d83aac53
Merge "Related-Bug: #1390392 Added 'Private VLAN' text field in Create Network popup in case of    vCenter orchestration mode. It will not be visible in Edit Network popup"
Related-Bug:#1393676
Showing the IPv6 address in monitoring pages
1)Implemented in network monitoring instance summary and detail pages,we are checking the flag ip6_active in the UVE and if it is enabled we are displaying the IPv6 address
else it wont be displayed
2)Implemented in the flows tab in vrouter details page

Change-Id: I31e8e3e083f67fd1ac9bda65c0da5f5afe178366
Merge "Related-Bug:#1393676 Showing the IPv6 address in monitoring pages 1)Implemented in network monitoring instance summary and detail pages,we are checking the flag ip6_active in the UVE and if it is enabled we are displaying the IPv6 address else it wont be displayed 2)Implemented in the flows tab in vrouter details page"
Merge pull request #48 from Juniper/master

Pull changes from Juniper/web-controller to absingla/web-controller