Add linspace test modules (#71850)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/71850
Test Plan: none
Reviewed By: cccclai
Differential Revision: D33785383
fbshipit-source-id: 67441df869f8cff8e75aec9adbeff2d31736a879
(cherry picked from commit 7043ae8f76db0632cd6a5dbb19a06cbc1c9a9a5a)
