MT#60511 add voip_header_rules direction "b_outbound"

This is needed to perform manipulations to the SIP message
just before it leaves the system on the B-Leg side.

Change-Id: Ib7dccaa270154893d66285d312da3434d9b3039d

lib/NGCP/Schema/Result/voip_header_rules.pm

@@ -41,7 +41,7 @@ __PACKAGE__->add_columns(
   "direction",
   {
     data_type => "enum",
-    extra => { list => ["inbound", "outbound", "local", "peer", "cf_inbound", "cf_outbound", "reply"] },
+    extra => { list => ["inbound", "outbound", "local", "peer", "b_outbound", "cf_inbound", "cf_outbound", "reply"] },
     default_value => "inbound",
     is_nullable => 0,
   },