Add assert_utils for multidevice test

Test: atest NetworkStaticLibHostPythonTests
Bug: 335368434
Change-Id: I2a9ee97b84cb16791c0c5e3cb03120e67ffeb0af
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 4cf93a8..47e5d5e 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -267,6 +267,10 @@
     },
     {
       "name": "FrameworksNetTests"
+    },
+    // TODO: Move to presumit after meet SLO requirement.
+    {
+      "name": "NetworkStaticLibHostPythonTests"
     }
   ],
   "mainline-presubmit": [