TT#78301 Add b2b service to callflow

Change-Id: Ie3e7b66963dde6437f51689c7e9f1d32bdc7d95b

lib/NGCP/Panel/Controller/Subscriber.pm

@@ -5180,6 +5180,7 @@ sub get_uas_json :Chained('callflow_base') :PathPart('uas_json') :Args(0) {
     $int_uas->{$c->config->{callflow}->{sbc}} = 'sbc' if ($c->config->{callflow}->{sbc});
     $int_uas->{$c->config->{callflow}->{app}} = 'app' if ($c->config->{callflow}->{app});
     $int_uas->{$c->config->{callflow}->{pbx}} = 'pbx' if ($c->config->{callflow}->{pbx});
+    $int_uas->{$c->config->{callflow}->{b2b}} = 'b2b' if ($c->config->{callflow}->{b2b});
 
     $c->response->content_type('application/json');
     $c->response->body(encode_json($int_uas));

lib/NGCP/Panel/Utils/Callflow.pm

@@ -82,6 +82,7 @@ sub process_callmap {
       $c->config->{callflow}->{sbc},    'sbc',
       $c->config->{callflow}->{app},    'app',
       $c->config->{callflow}->{pbx},    'pbx',
+      $c->config->{callflow}->{b2b},    'b2b',
     );
 
     my $canvas_margin = 100; # enough free space around diagram for text etc