Fix GetExpectedKernelType in Concat op#17459

Merged

jerrywgz merged 6 commits intoPaddlePaddle:developfrom

jerrywgz:fix_concat_type

May 23, 2019

Commits on May 16, 2019

fix concat op vartype check, test=develop
jerrywgz
committed

Commits on May 17, 2019

fix concat op vartype check, test=develop
jerrywgz
committed

Commits on May 20, 2019

Commits on May 22, 2019

refine code,test=develop
jerrywgz
committed