TT#109402 fix PATCHing fraud notification status

Change-Id: I04dcef51641102314cfc034222e6696c69f110e8
(cherry picked from commit 645231c274)

lib/NGCP/Panel/Form/CustomerFraudEvents/Reseller.pm

@@ -85,7 +85,7 @@ has_field 'interval_limit' => (
 has_field 'interval_lock' => (
     type => '+NGCP::Panel::Field::SubscriberLockSelect',
     label => 'Interval Lock',
-    required => 1,
+    required => 0,
     element_attr => {
         rel => ['tooltip'],
         title => ['Lock level to apply.']

lib/NGCP/Panel/Role/API/CustomerFraudEvents.pm

@@ -189,6 +189,8 @@ sub item_by_id {
 sub update_item {
     my ($self, $c, $item, $old_resource, $resource, $form) = @_;
 
+    undef $resource->{interval_lock} if (defined $resource->{interval_lock} and $resource->{interval_lock} eq '0');
+    
     $form //= $self->get_form($c);
     return unless $self->validate_form(
         c => $c,