Fix issues under caffe round 1
Summary: Some automation to fix uninitialized members for caffe2 code. Ran canary to make sure I don't have any regression in prod, but not sure how to test comprehensively for caffe2
Reviewed By: ezyang
Differential Revision: D13776185
fbshipit-source-id: fb2a479971cc0276d8784be1c44f01252410bd24
