Allow a shared library to be positioned after the application on the classpath

This is useful if/when it's desired that an application contains the same
fully qualified class name that's also in the library.

The shared libraries that are treated in this manor are controlled by the resource
com.android.internal.R.config_shared_libraries_loaded_after_app

Bug: 179429740

Test: atest SharedLibraryLoadingTests

Change-Id: Ia37ff9bd545918d1e0f1f38548dcd86f177559d5

tests/SharedLibraryLoadingTest/AndroidTest.xml

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2021 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<configuration description="Host-driven test module config for SharedLibraryHostTests">
+    <option name="test-tag" value="SharedLibraryLoadingTests" />
+    <option name="test-suite-tag" value="apct" />
+    <option name="test-suite-tag" value="apct-instrumentation" />
+
+    <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer" />
+    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.FilePusher">
+        <option name="cleanup" value="false" />
+        <option name="remount-system" value="true" />
+        <option name="push"
+                value="SharedLibraryLoadingTests_StandardSharedLibrary.apk->/product/app/SharedLibraryLoadingTests_StandardSharedLibrary.apk" />
+        <option name="push"
+                value="SharedLibraryLoadingTests_SharedLibraryLoadedAfter.apk->/product/app/SharedLibraryLoadingTests_SharedLibraryLoadedAfter.apk" />
+        <option name="push"
+                value="SharedLibraryLoadingTests_Overlay.apk->/product/overlay/SharedLibraryLoadingTests_Overlay.apk" />
+    </target_preparer>
+
+    <target_preparer class="com.android.tradefed.targetprep.RebootTargetPreparer" />
+
+    <target_preparer class="com.android.tradefed.targetprep.TestAppInstallSetup">
+        <option name="cleanup-apks" value="true" />
+        <option name="test-file-name" value="SharedLibraryLoadingTests_SharedLibraryClientTests.apk" />
+    </target_preparer>
+
+    <test class="com.android.tradefed.testtype.AndroidJUnitTest">
+        <option name="package" value="com.android.sharedlibloadingtest.client" />
+    </test>
+</configuration>