Eliminate redundant flow programming when host moves

When a host moves from [1A/1, 1B/1] to [1A/2, 1B/1], there is no need to program the pair link flow first.
Also update unit tests to verify this behavior.

Change-Id: I97c7ee5f0db891226c7ed477f5f05af5d6c1faa8
2 files changed
tree: c8defec98605ced53ba5ececa98e7112df9b8951
  1. BUILD
  2. app/
  3. web/