Adding config to allow/disallow user to add APNs.

Bug: 24519879
Bug: 24681288
Change-Id: Ifdf1899931449b27844bf54a246f0416b9b1033c
diff --git a/assets/carrier_config_311480.xml b/assets/carrier_config_311480.xml
index 5348b8b..949f121 100644
--- a/assets/carrier_config_311480.xml
+++ b/assets/carrier_config_311480.xml
@@ -29,5 +29,6 @@
         <int name="volte_replacement_rat_int" value="6" />
         <boolean name="enabledNotifyWapMMSC" value="true" />
         <boolean name="enableMultipartSMS" value="true" />
+        <boolean name="allow_adding_apns_bool" value="false" />
     </carrier_config>
 </carrier_config_list>