Issue : contrail-vrouter-agent crashes when a floating IP which is not installed is dissassociated from its VMI. During this disassociation we remove FIP from our UVE data-structure. In this removal path we access VN of FIP which will be NULL if the FIP is in "uninstalled" state

Fix: Don't remove FIP entries which are in "uninstalled" state as they wouldn't have been added.

Change-Id: I1d9862daf23eafb4480ba6372d701bc2b46c3dc9
Closes-Bug: #1390327
Merge "Issue : contrail-vrouter-agent crashes when a floating IP which is not installed is dissassociated from its VMI. During this disassociation we remove FIP from our UVE data-structure. In this removal path we access VN of FIP which will be NULL if the FIP is in "uninstalled" state"