Add NetHttpCoverageTests to mainline presubmit

Mainline presubmit runs on older images. So we need to set:
- min_sdk_version to the minimum sdk we support otherwise
it would default to current
- enforce_default_target_sdk_version since mainline needs
all modules to target the latest sdk

Test: presubmit
Bug: 263294440
Change-Id: I20757b13ab9ab45908dae088c6cb6b0bbc51989d
diff --git a/Cronet/tests/mts/AndroidTest.xml b/Cronet/tests/mts/AndroidTest.xml
index 8cb549e..0d780a1 100644
--- a/Cronet/tests/mts/AndroidTest.xml
+++ b/Cronet/tests/mts/AndroidTest.xml
@@ -16,8 +16,9 @@
   -->
 <configuration description="Runs NetHttp Mainline Tests.">
     <!-- Only run tests if the device under test is SDK version 30 or above. -->
+    <!-- TODO Switch back to Sdk30 when b/270049141 is fixed -->
     <object type="module_controller"
-            class="com.android.tradefed.testtype.suite.module.Sdk30ModuleController" />
+            class="com.android.tradefed.testtype.suite.module.Sdk31ModuleController" />
 
     <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
         <option name="test-file-name" value="NetHttpTests.apk" />