GitLab

* Only use one gpu for tensorflow tests
Signed-off-by: kaixih <kaixih@nvidia.com>

* Simplify the change
Signed-off-by: kaixih <kaixih@nvidia.com>

* Final fix
Signed-off-by: kaixih <kaixih@nvidia.com>

---------
Signed-off-by: kaixih <kaixih@nvidia.com>
Co-authored-by: Kirthi Shankar Sivamani <ksivamani@nvidia.com>