Add FrameworksNetIntegrationTests to postsubmit

After checking flake metrics for this test, it can be added in
presubmit.

Test: this change is to check results in postsubmit
Change-Id: I70cb149629a3e959e29cfd21048e7b148bd29fe9
diff --git a/tests/net/TEST_MAPPING b/tests/net/TEST_MAPPING
new file mode 100644
index 0000000..a7853b6
--- /dev/null
+++ b/tests/net/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "postsubmit": [
+    {
+      "name": "FrameworksNetIntegrationTests"
+    }
+  ]
+}
\ No newline at end of file