Add CtsNetTestCasesLatestSdk to mainline-presubmit

This is the pilot run for mainline testing in Test Mapping Suite.

For supporting mainline testing in Test Mapping Suite, developers can
run tests by configuring the TEST_MAPPING file, the 3 simple steps are:
  - Add tests to be part of general-tests suite if the test does not
    depend on a device specific features.
  - Update test configureation for TradeFed to run mainline testing.
  - Update TEST_MAPPING file with test-group as "mainline-presubmit"

It's only for postsubmit now, and will be moved to actual presubmit
once the whole mechanism is stable.

For more details about the usage, please refer to go/test-mapping-mainline-user-guide

Bug: 160753366
Test: forrest.
Change-Id: I8704cc5626a3e049eb3c27adb86e9c1a4d828273

tests/cts/net/Android.bp

@@ -83,7 +83,7 @@ android_test {
     min_sdk_version: "29",
     target_sdk_version: "29",
     test_suites: [
-        "device-tests",
+        "general-tests",
         "mts",
     ],
     test_config_template: "AndroidTestTemplate.xml",

tests/cts/net/AndroidTestTemplate.xml

@@ -19,6 +19,8 @@
     <option name="config-descriptor:metadata" key="parameter" value="instant_app" />
     <option name="config-descriptor:metadata" key="parameter" value="not_multi_abi" />
     <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
+
+    <option name="config-descriptor:metadata" key="mainline-param" value="CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk" />
     <option name="not-shardable" value="true" />
     <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
         <option name="cleanup-apks" value="true" />

tests/cts/net/TEST_MAPPING

@@ -9,5 +9,15 @@
         }
       ]
     }
+  ],
+  "mainline-presubmit": [
+    {
+      "name": "CtsNetTestCasesLatestSdk[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk]",
+      "options": [
+        {
+          "exclude-annotation": "com.android.testutils.SkipPresubmit"
+        }
+      ]
+    }
   ]
 }