test(relay): skip native suites without binding

Signed-off-by: Alex Fournier <afournier@nvidia.com>

tests/agent/test_auxiliary_relay.py

@@ -2,6 +2,8 @@ from types import SimpleNamespace
 
 import pytest
 
+pytest.importorskip("nemo_relay")
+
 from agent import auxiliary_client, relay_llm, relay_runtime
 
 

tests/agent/test_relay_llm.py

@@ -8,6 +8,8 @@ from types import SimpleNamespace
 
 import pytest
 
+pytest.importorskip("nemo_relay")
+
 from agent import relay_llm, relay_runtime
 
 

tests/agent/test_relay_tools.py

@@ -4,6 +4,8 @@ from __future__ import annotations
 
 import pytest
 
+pytest.importorskip("nemo_relay")
+
 from agent import relay_runtime, relay_tools