Shell: Grant CACHE_CONTENT to Shell

Required to test ContentResover#[get|put]Cache

Bug: 127711435
Test: atest CtsContentTestCases

(cherry picked from commit a31ed1bb)

Merged-In: I5eb72772a0a35897611dd6db95c68a2d2e971e9a
Change-Id: I91a91a2969db175d88e9f41938869bc751f7b108

packages/Shell/AndroidManifest.xml

@@ -166,6 +166,9 @@
     <!-- Permission needed to test tcp keepalive offload. -->
     <uses-permission android:name="android.permission.PACKET_KEEPALIVE_OFFLOAD" />
 
+    <!-- Permission required to test ContentResolver caching. -->
+    <uses-permission android:name="android.permission.CACHE_CONTENT" />
+
     <application android:label="@string/app_label"
                  android:defaultToDeviceProtectedStorage="true"
                  android:directBootAware="true">