Disable verbose default logging from Boto3 in TLS installer (#2299)

Summary:
Pull Request resolved: #2299

This change updates Boto3 primary loggers to only emit `WARNING` logs. The default value is `DEBUG` and is too verbose.

Differential Revision: D46002349

fbshipit-source-id: 2a37ea9aa4a6bd7a44559a52ed40ed86378d3d7c

docker/onedocker/prod/plugins/tls_cert_installer.py

@@ -48,6 +48,17 @@ def _get_secret(secret_id: str, region: str) -> str:
     return secret_svc.get_secret(secret_id).value
 
 
+def _set_boto_log_level(log_level: int) -> None:
+    """Sets the log level for all Boto3 loggers. The default value is DEBUG.
+
+    Arguments:
+        log_level: A logging log level
+    """
+    logging.getLogger("boto3").setLevel(log_level)
+    logging.getLogger("boto").setLevel(log_level)
+    logging.getLogger("botocore").setLevel(log_level)
+
+
 def main() -> None:
     logger = logging.getLogger()
     streamHandler = logging.StreamHandler(sys.stdout)
@@ -56,6 +67,9 @@ def main() -> None:
     streamHandler.setFormatter(formatter)
     logger.addHandler(streamHandler)
 
+    # disable verbose default logging from boto
+    _set_boto_log_level(logging.WARNING)
+
     logging.info("Reading certificate content from environment variables...")
     server_certificate = _get_env_var_if_set(SERVER_CERTIFICATE, "")
     server_certificate_path = _get_env_var_if_set(SERVER_CERTIFICATE_PATH, "")