contrib/nix: add changelog entry
contrib/nix: add changelog entry

Change-Id: Icb2d414305cb6f3e0766f2d124844ca3dba9f79e
Reviewed-on: http://gerrit.aldebaran.lan/55642
Approved: nrubinstein <958004d5663b4fd0a0d26fef541880ee5b34c6ef@aldebaran-robotics.com>
Reviewed-by: nrubinstein <958004d5663b4fd0a0d26fef541880ee5b34c6ef@aldebaran-robotics.com>
Tested-by: nrubinstein <958004d5663b4fd0a0d26fef541880ee5b34c6ef@aldebaran-robotics.com>

aldebaran/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild