Add allow_out_foreign_domain preference.

db_scripts/diff/13393.down

@@ -0,0 +1,3 @@
+USE provisioning;
+
+DELETE FROM voip_preferences WHERE attribute='allow_out_foreign_domain';

db_scripts/diff/13393.up

@@ -0,0 +1,3 @@
+USE provisioning;
+
+INSERT INTO voip_preferences VALUES (NULL, 'allow_out_foreign_domain', 1, 1, 1, 1, 0, now(), 0, 'boolean', 0, 'Allow outbound calls of local subscribers to foreign domains');