Injecting TPU_NAME environment variable

[Edwinhr716]

What type of PR is this?

/kind feature

What this PR does / why we need it

When requesting TPU resources, it injects the environment variable TPU_NAMES, which contains the name of the pod the TPU is in. This is needed as popular distributed runtime libraries such as Ray expect this variable to be set https://github.com/ray-project/ray/blob/ab27fe805c3fef4c8dc66bf5804f32cd522d1aad/python/ray/_private/accelerators/tpu.py#L247

Which issue(s) this PR fixes

Fixes #

Special notes for your reviewer

Does this PR introduce a user-facing change?

NONE

[BenTheElder]

/skip

[BenTheElder]

/override pull-lws-test-e2e-main-1-27

see: https://kubernetes.slack.com/archives/C7J9RP96G/p1725908686722759 / https://kubernetes.slack.com/archives/C09QZ4DQB/p1725891002485159

[BenTheElder]

er, that command has to be done by a github admin of this repo
(I forgot that infra admins cannot do this generically)

[liurupeng]

/override pull-lws-test-e2e-main-1-27

[ahg-g]

btw, we can do this today as follows: https://kubernetes.io/docs/tasks/inject-data-application/environment-variable-expose-pod-information/

[BenTheElder]

maybe try closing and re-opening, that forces github to clear the statuses

[liurupeng]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Edwinhr716, liurupeng

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[Edwinhr716]

/retest