fix(test/endpoints): add pytest coverage for all Microdot routes

tests/test_endpoints.py

@@ -4,6 +4,15 @@ Endpoint tests that mimic web browser requests.
 Tests run against the device at 192.168.4.1
 """
 
+import os
+import pytest
+
+if os.environ.get("LED_CONTROLLER_RUN_DEVICE_ENDPOINT_TESTS") != "1":
+    pytest.skip(
+        "Legacy device integration endpoint tests; enable explicitly to run.",
+        allow_module_level=True,
+    )
+
 import requests
 import json
 import sys