TT#26454 fix form creation for advanced callforwards

build_options on a field of type HTML::FormHandler::Field::Select is
always run on instantiation time. Since this is dynamic and dependent on
the external db values for destinationsets, timesets and sourcesets, the
form has to be re-instantiated every time

Change-Id: I724ea782c11b8208738731165cfe9d1a54b274f6
(cherry picked from commit 993d9458f9)

lib/NGCP/Panel/Controller/Subscriber.pm

@@ -1090,9 +1090,9 @@ sub preferences_callforward_advanced :Chained('base') :PathPart('preferences/cal
 
     my $cf_form;
     if($cf_type eq "cft") {
-        $cf_form = NGCP::Panel::Form::get("NGCP::Panel::Form::SubscriberCFTAdvanced", $c);
+        $cf_form = NGCP::Panel::Form::get("NGCP::Panel::Form::SubscriberCFTAdvanced", $c, 1);
     } else {
-        $cf_form = NGCP::Panel::Form::get("NGCP::Panel::Form::SubscriberCFAdvanced", $c);
+        $cf_form = NGCP::Panel::Form::get("NGCP::Panel::Form::SubscriberCFAdvanced", $c, 1);
     }
 
     my @maps = ();

lib/NGCP/Panel/Form.pm

@@ -4,9 +4,9 @@ use Module::Load::Conditional qw/can_load/;
 my %forms = ();
 
 sub get {
-    my ($name, $c) = @_;
+    my ($name, $c, $create_new) = @_;
     my $form;
-    if(exists $forms{$name}) {
+    if(exists $forms{$name} && !$create_new) {
         $form = $forms{$name};
         $form->clear();
         $form->ctx($c);