Add support for reading `net/data/ssl/certificates` files

* After supporting netty, the certificates files are needed to start up the HTTP server. Those files must be moved to the emulator which happens through the changes in AndroidTest.xml, isolated-storage
has been disabled to allow the emulator to access the storage freely without restriction. Otherwise
I will have to change the destination of the data files which will result in divergence.

* Added the newly introduced test utility java classes including netty to the `jarjar_excludes` as they must not be jarjared because they are not part of the bootclasspath.

Test: atest NetHttpTests
Bug: 319629150
Bug: 304217500
Change-Id: I2331873a9e178783319f889a377ba7e390ecdd6f
diff --git a/Cronet/tests/mts/Android.bp b/Cronet/tests/mts/Android.bp
index 63905c8..743a1ca 100644
--- a/Cronet/tests/mts/Android.bp
+++ b/Cronet/tests/mts/Android.bp
@@ -48,19 +48,20 @@
 }
 
 android_test {
-     name: "NetHttpTests",
-     defaults: [
+    name: "NetHttpTests",
+    defaults: [
         "mts-target-sdk-version-current",
-     ],
-     static_libs: ["NetHttpTestsLibPreJarJar"],
-     jarjar_rules: ":net-http-test-jarjar-rules",
-     jni_libs: [
+    ],
+    static_libs: ["NetHttpTestsLibPreJarJar"],
+    jarjar_rules: ":net-http-test-jarjar-rules",
+    jni_libs: [
         "cronet_aml_components_cronet_android_cronet__testing",
         "cronet_aml_components_cronet_android_cronet_tests__testing",
-     ],
-     test_suites: [
-         "general-tests",
-         "mts-tethering",
-     ],
+        "cronet_aml_third_party_netty_tcnative_netty_tcnative_so__testing",
+    ],
+    test_suites: [
+        "general-tests",
+        "mts-tethering",
+    ],
+    data: [":cronet_javatests_resources"],
 }
-