Allow ActivityManagerService to start cacheDump service.

Configures SELinux to allow ActivityManagerService to start a cacheinfo
service that is responsible for dumping per-process cache state.

Bug: 153661880
Test: adb shell dumpsys cacheinfo
Test: adb bugreport
Change-Id: Id6a4bdf2a9cb6d7f076b08706e0f91d377f38603
diff --git a/private/service_contexts b/private/service_contexts
index e01dcc1..5c6f1a4 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -40,6 +40,7 @@
 bluetooth                                 u:object_r:bluetooth_service:s0
 broadcastradio                            u:object_r:broadcastradio_service:s0
 bugreport                                 u:object_r:bugreport_service:s0
+cacheinfo                                 u:object_r:cacheinfo_service:s0
 carrier_config                            u:object_r:radio_service:s0
 clipboard                                 u:object_r:clipboard_service:s0
 com.android.net.IProxyService             u:object_r:IProxyService_service:s0