RouteHandler misbehaved when next hop moves from single location to dual location

sr-device-subnet was not properly maintained and the subnet was not populated
Also implement the unit test for this scenario

Change-Id: I1507ce2457588992ff8aae216339b6bd80c67acd
2 files changed
tree: 58557b5a30334d6d6760425c50347a7c0af2e7c2
  1. BUCK
  2. BUILD
  3. app/
  4. pom.xml
  5. web/