reinstate r3d/migrations/__init__.py (removed in squash)
reinstate r3d/migrations/__init__.py (removed in squash)

Change-Id: I95971687d174a44a66164ea3989228e95c396b36

intel-hpdd/intel-manager-for-lustre,intel-hpdd/intel-manager-for-lustre,intel-hpdd/intel-manager-for-lustre