Add shell permissions for CTS test (AdbManagerTest).

Bug: 159936209

Test: atest CtsAdbManagerTests
Change-Id: I896b53df582cceb7d1b0d6694d00064b0fb57b94
diff --git a/packages/Shell/AndroidManifest.xml b/packages/Shell/AndroidManifest.xml
index b64a9e7..570c2ab3 100644
--- a/packages/Shell/AndroidManifest.xml
+++ b/packages/Shell/AndroidManifest.xml
@@ -314,6 +314,9 @@
     <!-- Permissions required for GTS test - GtsDialerAudioTestCases -->
     <uses-permission android:name="android.permission.CAPTURE_AUDIO_OUTPUT" />
 
+    <!-- Permissions required for CTS test - AdbManagerTest -->
+    <uses-permission android:name="android.permission.MANAGE_DEBUGGING" />
+
     <application android:label="@string/app_label"
                 android:theme="@android:style/Theme.DeviceDefault.DayNight"
                 android:defaultToDeviceProtectedStorage="true"