* Update sg_id for reverse flow also, upon route notification and then
  evaluate policy. Test case for same.
Closes-bug: #1350312

Change-Id: I2b50e551f0660f7ce44b38f3c679844a2d2a76ee
Merge "* Update sg_id for reverse flow also, upon route notification and then   evaluate policy. Test case for same. Closes-bug: #1350312"