* Send ARP request whenever a path moves to wait_for_traffic state
* Set subnet gw ip addresss in path to be used for sending arp
  request
* Test case to verify sending of ARP request
Closes bug : #1352850

Change-Id: Iec4e5daf4f76ceb9773a47c6758e814b82c4fb7f
Merge "* Send ARP request whenever a path moves to wait_for_traffic state * Set subnet gw ip addresss in path to be used for sending arp   request * Test case to verify sending of ARP request Closes bug : #1352850"