Adding R3.1 branch to CI Closes-Bug: 1602106
Adding R3.1 branch to CI Closes-Bug: 1602106

Change-Id: I90e639e9cab2b5befe69bdbf746fd69b5ada6573

codilime/contrail-controller,codilime/contrail-controller,codilime/contrail-controller,codilime/contrail-controller,codilime/contrail-controller,codilime/contrail-controller