Fix Bug #211 - Bundle export needs to handle User.DoesNotExist
Fix Bug #211 - Bundle export needs to handle User.DoesNotExist

Change-Id: Ib786bb58dafdf13a2582d3e5c4a23da4fa79d392

Linaro/lava-server,Linaro/lava-server,Linaro/lava-server,Linaro/lava-server