set default SAFETENSORS_FAST_GPU and HF_HUB_DISABLE_TELEMETRY in HF Server

[lizzzcai]

What this PR does / why we need it:

set SAFETENSORS_FAST_GPU=1 and HF_HUB_DISABLE_TELEMETRY=1.

SAFETENSORS_FAST_GPU: seems can improve the model loading time from HF example (direct copy to GPU).
HF_HUB_DISABLE_TELEMETRY: HF has enabled telemetry by default. It is a bit sensitive and the user may not know it. Just disable it by default and if the user wants it can enable it by overwriting the value.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Type of changes
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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Feature/Issue validation/testing:

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Special notes for your reviewer:

1. Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

Checklist:

• Have you added unit/e2e tests that prove your fix is effective or that this feature works?
• Has code been commented, particularly in hard-to-understand areas?
• Have you made corresponding changes to the documentation?

Release note:

[spolti]

Does it make sense to add this information in the docs?

[lizzzcai]

Does it make sense to add this information in the docs?

added to the hf runtime README.

[yuzisun]

/lgtm
/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lizzzcai, yuzisun

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