Update permissions on memory usage instrumentation

                     android:name="com.android.tests.memoryusage.MemoryUsageInstrumentation"

                     android:targetPackage="com.android.tests.memoryusage" />

    <uses-permission android:name="android.permission.REAL_GET_TASKS" />

    <application android:label="Memory Usage Test">

        <uses-library android:name="android.test.runner" />

    </application>