Add com.android.net.IProxyService to service_contexts.

Add com.android.net.IProxyService as a system_server_service
to service_contexts.

Bug: 16369427

(cherry picked from commit 26d6371c)

Change-Id: I3e58681971683bdc7f26a1d130c8bcf8ffcb89e2

service_contexts

@@ -16,6 +16,7 @@ bluetooth_manager                         u:object_r:system_server_service:s0
 bluetooth                                 u:object_r:bluetooth_service:s0
 clipboard                                 u:object_r:system_server_service:s0
 com.android.internal.telephony.mms.IMms   u:object_r:system_server_service:s0
+com.android.net.IProxyService             u:object_r:system_server_service:s0
 commontime_management                     u:object_r:system_server_service:s0
 common_time.clock                        u:object_r:mediaserver_service:s0
 common_time.config                       u:object_r:mediaserver_service:s0