Separate product_service_contexts out of system sepolicy.

Bug: 119305624
Test: normal/recovery boot aosp_taimen
Change-Id: I15aa275fa658b58f5a5d3e651d164f9fcd87c0af
diff --git a/private/file_contexts b/private/file_contexts
index d0936e9..6b15fc0 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -378,6 +378,7 @@
 /(product|system/product)/etc/selinux/product_hwservice_contexts u:object_r:hwservice_contexts_file:s0
 /(product|system/product)/etc/selinux/product_property_contexts  u:object_r:property_contexts_file:s0
 /(product|system/product)/etc/selinux/product_seapp_contexts     u:object_r:seapp_contexts_file:s0
+/(product|system/product)/etc/selinux/product_service_contexts   u:object_r:service_contexts_file:s0
 
 #############################
 # Product-Services files