Allow getsockopt and setsockopt for Encap Sockets

Because applications should be able to set the receive
timeout on UDP encapsulation sockets, we need to allow
setsockopt(). getsockopt() is an obvious allowance as
well.

Bug: 68689438
Test: compilation
Merged-In: I2eaf72bcce5695f1aee7a95ec03111eca577651c
Change-Id: I2eaf72bcce5695f1aee7a95ec03111eca577651c
diff --git a/private/system_app.te b/private/system_app.te
index d6be5a3..b2f8376 100644
--- a/private/system_app.te
+++ b/private/system_app.te
@@ -116,7 +116,8 @@
 
 # allow system apps to use UDP sockets provided by the system server but not
 # modify them other than to connect
-allow system_app system_server:udp_socket { connect getattr read recvfrom sendto write };
+allow system_app system_server:udp_socket {
+        connect getattr read recvfrom sendto write getopt setopt };
 
 ###
 ### Neverallow rules