fix: respect log_level in uvicorn and third party libs

uvicorn has a `log_level` arg in uvicorn.run, pass in the effective level set by the logger.

Additionally, third party libraries like httpx are using our logging format, but not honoring our log level.

This seems unintended, so loop through all items in the loggerDict and apply the same log level as what we have set.

Signed-off-by: Charlie Doern <cdoern@redhat.com>

llama_stack/distribution/server/server.py

@@ -422,6 +422,7 @@ def main():
         "host": listen_host,
         "port": port,
         "lifespan": "on",
+        "log_level": logger.getEffectiveLevel(),
     }
     if ssl_config:
         uvicorn_config.update(ssl_config)

llama_stack/log.py

@@ -170,6 +170,11 @@ def setup_logging(category_levels: Dict[str, int], log_file: str | None) -> None
     }
     dictConfig(logging_config)
 
+    # Ensure third-party libraries follow the root log level
+    for _, logger in logging.root.manager.loggerDict.items():
+        if isinstance(logger, logging.Logger):
+            logger.setLevel(root_level)
+
 
 def get_logger(name: str, category: str = "uncategorized") -> logging.LoggerAdapter:
     """