fix: Some tools in LLM requests are missing the description

[efunneko]

See issue #551

This fix will copy over the original function's doc string for functions that have ignored parameters.

[hangfei]

@efunneko thanks for the fix.

Could you provide before vs after fix logs/screenshots?

[gregmeldrum]

I'm seeing this issue as well using claude 3.7 sonnet in Bedrock through litellm. Without the fix, I get Bedrock exceptions stating that the description field is missing. When I apply the fix, the exceptions go away.

Here is an example exception:

litellm.exceptions.BadRequestError: litellm.BadRequestError: OpenAIException - litellm.BadRequestError: BedrockException 
{"message":"7 validation errors detected: Value '' at 'toolConfig.tools.1.member.toolSpec.description' failed to satisfy constraint: Member must have length greater than or equal to 1;
Value '' at 'toolConfig.tools.3.member.toolSpec.description' failed to satisfy constraint: Member must have length greater than or equal to 1;
Value '' at 'toolConfig.tools.4.member.toolSpec.description' failed to satisfy constraint: Member must have length greater than or equal to 1; 
Value '' at 'toolConfig.tools.6.member.toolSpec.description' failed to satisfy constraint: Member must have length greater than or equal to 1; 
Value '' at 'toolConfig.tools.7.member.toolSpec.description' failed to satisfy constraint: Member must have length greater than or equal to 1; 
Value '' at 'toolConfig.tools.8.member.toolSpec.description' failed to satisfy constraint: Member must have length greater than or equal to 1; 
Value '' at 'toolConfig.tools.9.member.toolSpec.description' failed to satisfy constraint: Member must have length greater than or equal to 1"}.

[efunneko]

@hangfei - I saw the exact same logs as what @gregmeldrum posted in his comment above. The logs went away after the fix was made. Please let me know if you would still like screen shots from a debug session or if this is enough

[efunneko]

@hangfei Please let me know if you still need more from me on this. The fix is very straightforward and makes a big difference to system performance.

[seanzhou1023]

merged in 7fdc6b4