Add sepolicy for IpMemoryStoreService

Bug: 116512211
Test: Builds, boots, including upcoming changes needing this
Change-Id: I6f119368c5a4f7ac6c0325915dff60124c5a6399
diff --git a/private/app.te b/private/app.te
index ffe6598..876406f 100644
--- a/private/app.te
+++ b/private/app.te
@@ -23,3 +23,6 @@
     { domain -appdomain -crash_dump -rs }:process { transition };
 neverallow { appdomain -shell userdebug_or_eng(`-su') }
     { domain -appdomain }:process { dyntransition };
+
+# Disallow apps from using IP memory store
+neverallow { appdomain -shell } ipmemorystore_service:service_manager *;