Add cloud-tpu-client to xla CI. (#50823)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/50823
Test Plan: Imported from OSS
Reviewed By: seemethere
Differential Revision: D25976931
Pulled By: ailzhang
fbshipit-source-id: f29c24c232944a103b59d9fea9b1c19969a7821b
