TT#109104 new peer preference 'allow_lm_forward_loop'

By default calls that come from a peer group and are looped back
to the same peer group due to a subscriber location mappings 'forward'
entry are blocked to avoid loop creation.

This preference allows to override the default behavior and permit
the loop over the same peering group.
It has to be used with caution and activated only if necessary.

Change-Id: I5040204805c3b2a740250cec11a8e9914333f10b

db_scripts/diff/15715.down

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

db_scripts/diff/15715.up

@@ -0,0 +1,25 @@
+USE provisioning;
+SET autocommit=0;
+
+SELECT id INTO @pgid FROM voip_preference_groups WHERE name = 'Internals';
+
+INSERT INTO voip_preferences SET
+    voip_preference_groups_id = @pgid,
+    attribute = "allow_lm_forward_loop",
+    label = "Allow loop to same peering group for location mapping 'forward'" ,
+    type = 1,
+    max_occur = 1,
+    usr_pref = 0,
+    prof_pref = 0,
+    dom_pref = 0,
+    peer_pref = 1,
+    contract_pref = 0,
+    contract_location_pref = 0,
+    modify_timestamp = now(),
+    internal = 0,
+    expose_to_customer = 0,
+    data_type = "boolean",
+    read_only = 0,
+    description = "By default calls that come from a peer group and are looped back to the same peer group due to a subscriber location mappings 'forward' entry are blocked to avoid loop creation. This preference allows to override the default behavior and permit the loop over the same peering group. It has to be used with caution and activated only if necessary.";
+
+COMMIT;