Move test_mainline_modules to AndroidTest.xml

When an AndroidTest.xml is used, configuration needs to be in the
AndroidTest.xml file, not in the Android.bp.

This currently causes tests not to be run in TEST_MAPPING as they should
be.

Test: TH needs to test
Bug: 187935317
Original-Change: https://android-review.googlesource.com/1748157
Merged-In: Ie0aca0c64646825175769cd375bcecf65de4b4c8
Change-Id: Ie0aca0c64646825175769cd375bcecf65de4b4c8

tests/common/Android.bp

@@ -50,9 +50,6 @@ android_test {
     // TODO: change to 31 as soon as it is available
     target_sdk_version: "30",
     test_suites: ["device-tests", "mts"],
-    test_mainline_modules: [
-        "CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex",
-    ],
     defaults: [
         "framework-connectivity-test-defaults",
         "FrameworksNetTests-jni-defaults",

tests/common/AndroidTest_Coverage.xml

@@ -18,6 +18,7 @@
     </target_preparer>
 
     <option name="test-tag" value="ConnectivityCoverageTests" />
+    <option name="config-descriptor:metadata" key="mainline-param" value="CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex" />
     <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
         <option name="package" value="com.android.connectivity.tests.coverage" />
         <option name="runner" value="androidx.test.runner.AndroidJUnitRunner" />