frameworks: add test group for auto tests

Adding a seperate test tag into postsubmit so as to identify which tests
we want to run for automotive builds.

Test: atest --test-mapping [src]:auto-postsubmit
bug: 179917339
Change-Id: I3860fb6bf4f4174fad26cce5f7d6b43fd6494c0f

tests/net/TEST_MAPPING

@@ -9,6 +9,23 @@
       "name": "FrameworksNetDeflakeTest"
     }
   ],
+  "auto-postsubmit": [
+    // Test tag for automotive targets. These are only running in postsubmit so as to harden the
+    // automotive targets to avoid introducing additional test flake and build time. The plan for
+    // presubmit testing for auto is to augment the existing tests to cover auto use cases as well.
+    // Additionally, this tag is used in targeted test suites to limit resource usage on the test
+    // infra during the hardening phase.
+    // TODO: this tag to be removed once the above is no longer an issue.
+    {
+      "name": "FrameworksNetTests"
+    },
+    {
+      "name": "FrameworksNetIntegrationTests"
+    },
+    {
+      "name": "FrameworksNetDeflakeTest"
+    }
+  ],
   "imports": [
     {
       "path": "cts/tests/tests/net"