Fix e2e test regex to match new resolve_auth error message

The error for missing tokens changed from "Missing or malformed
Authorization header" to "Missing authentication" when auth was
unified through resolve_auth. Update the regex to match.

Author: rjpower

lib/iris/tests/e2e/test_smoke.py

@@ -995,7 +995,7 @@ def test_static_auth_rpc_access():
 
         # Unauthenticated: should be rejected with 401
         unauth_client = ControllerServiceClientSync(address=url, timeout_ms=5000)
-        with pytest.raises(ConnectError, match=r"(?i)authorization"):
+        with pytest.raises(ConnectError, match=r"(?i)authenticat"):
             unauth_client.list_workers(list_req)
         unauth_client.close()