fix(python-client): add auth headers to is supported requests (#234)

clients/python/pyproject.toml

 [tool.poetry]
 name = "text-generation"
-version = "0.5.0"
+version = "0.5.1"
 description = "Hugging Face Text Generation Python Client"
 license = "Apache-2.0"
 authors = ["Olivier Dehaene <olivier@huggingface.co>"]

clients/python/text_generation/inference_api.py

 import os
 import requests
 
-from typing import Optional, List
+from typing import Dict, Optional, List
 from huggingface_hub.utils import build_hf_headers
 
 from text_generation import Client, AsyncClient, __version__
@@ -13,7 +13,7 @@ INFERENCE_ENDPOINT = os.environ.get(
 )
 
 
-def deployed_models() -> List[DeployedModel]:
+def deployed_models(headers: Optional[Dict] = None) -> List[DeployedModel]:
     """
     Get all currently deployed models with text-generation-inference-support
 
@@ -22,6 +22,7 @@ def deployed_models() -> List[DeployedModel]:
     """
     resp = requests.get(
         f"https://api-inference.huggingface.co/framework/text-generation-inference",
+        headers=headers,
         timeout=5,
     )
 
@@ -33,7 +34,7 @@ def deployed_models() -> List[DeployedModel]:
     return models
 
 
-def check_model_support(repo_id: str) -> bool:
+def check_model_support(repo_id: str, headers: Optional[Dict] = None) -> bool:
     """
     Check if a given model is supported by text-generation-inference
 
@@ -42,6 +43,7 @@ def check_model_support(repo_id: str) -> bool:
     """
     resp = requests.get(
         f"https://api-inference.huggingface.co/status/{repo_id}",
+        headers=headers,
         timeout=5,
     )
 
@@ -95,13 +97,14 @@ class InferenceAPIClient(Client):
                 Timeout in seconds
         """
 
-        # Text Generation Inference client only supports a subset of the available hub models
-        if not check_model_support(repo_id):
-            raise NotSupportedError(repo_id)
-
         headers = build_hf_headers(
             token=token, library_name="text-generation", library_version=__version__
         )
+
+        # Text Generation Inference client only supports a subset of the available hub models
+        if not check_model_support(repo_id, headers):
+            raise NotSupportedError(repo_id)
+
         base_url = f"{INFERENCE_ENDPOINT}/models/{repo_id}"
 
         super(InferenceAPIClient, self).__init__(
@@ -150,14 +153,14 @@ class InferenceAPIAsyncClient(AsyncClient):
             timeout (`int`):
                 Timeout in seconds
         """
+        headers = build_hf_headers(
+            token=token, library_name="text-generation", library_version=__version__
+        )
 
         # Text Generation Inference client only supports a subset of the available hub models
-        if not check_model_support(repo_id):
+        if not check_model_support(repo_id, headers):
             raise NotSupportedError(repo_id)
 
-        headers = build_hf_headers(
-            token=token, library_name="text-generation", library_version=__version__
-        )
         base_url = f"{INFERENCE_ENDPOINT}/models/{repo_id}"
 
         super(InferenceAPIAsyncClient, self).__init__(