[caffe][memonger] Extend operator schema check to dag memonger (#48021)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/48021
Extending operator schema check for simple memonger to dag memonger as well. As part of this a fix is being made to handle inplace ops (having at least one output name same as input blob). Earlier all the output blobs from ops were being treated as shareable but it failed assertion of external input blobs with the same name not allowed to share.
Test Plan: Added corresponding unit tests
Reviewed By: hlu1
Differential Revision: D24968862
fbshipit-source-id: b6679a388a82b0d68f65ade64b85560354aaa3ef
