[FIX] Proxy - Set different locations per vertex ai deployment on litellm proxy

[ishaan-jaff]

Set different locations per vertex ai deployment on litellm proxy

model_list:
  - model_name: gemini-vision
    litellm_params:
      model: vertex_ai/gemini-1.0-pro-vision-001
      vertex_project: "project-id"
      vertex_location: "us-central1"
  - model_name: gemini-vision
    litellm_params:
      model: vertex_ai/gemini-1.0-pro-vision-001
      vertex_project: "project-id2"
      vertex_location: "us-east"

[vercel]

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Name	Status	Preview	Updated (UTC)
litellm	✅ Ready (Inspect)	Visit Preview	Feb 28, 2024 4:16pm
litellm-dashboard	✅ Ready (Inspect)	Visit Preview	Feb 28, 2024 4:16pm

[railway-app]

This PR is being deployed to Railway 🚅

litellm: ◻️ REMOVED