Apply ensemble updates nov 13

[bkorycki]

• wildguard is removed from the ensemble
• mistral 7b vllm is added to the ensemble

• Users must now specify the vllm endpoint urls in the secrets config file instead of setting environment variables i.e.:

  [lg3_lora_vllm]
  endpoint_url=<url>
  api_key = <key>
  
  [mistral_7b_vllm]
  endpoint_url=<url>
  api_key = <key>

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