Fix OOM in Travis in executor test
Fix OOM in Travis in executor test

Summary: Use only MLP model and re-enable test

Reviewed By: bddppq, Yangqing

Differential Revision: D6013471

fbshipit-source-id: 0cb4a9346c62a739ee6259832181f71e60eef311

xzturn/caffe2,davinwang/caffe2,davinwang/caffe2,pietern/caffe2,pietern/caffe2,pietern/caffe2,davinwang/caffe2,Yangqing/caffe2,davinwang/caffe2,davinwang/caffe2,Yangqing/caffe2,sf-wind/caffe2,sf-wind/caffe2,xzturn/caffe2,caffe2/caffe2,xzturn/caffe2,Yangqing/caffe2,pietern/caffe2,Yangqing/caffe2,sf-wind/caffe2,sf-wind/caffe2,Yangqing/caffe2,xzturn/caffe2,sf-wind/caffe2,xzturn/caffe2,pietern/caffe2