MT#10885 Prevent foreign key deletion by schema.

Should be handled in mysql directly, not by schema.

lib/NGCP/Schema/Result/provisioning_voip_subscribers.pm

@@ -161,6 +161,13 @@ __PACKAGE__->has_many(
   { cascade_copy => 0, cascade_delete => 0 },
 );
 
+__PACKAGE__->has_many(
+  "voip_pbx_group_members",
+  "NGCP::Schema::Result::voip_pbx_groups",
+  { "foreign.group_id" => "self.id" },
+  { cascade_copy => 0, cascade_delete => 0 },
+);
+
 __PACKAGE__->might_have(
   "voip_reminder",
   "NGCP::Schema::Result::voip_reminder",

lib/NGCP/Schema/Result/voip_pbx_groups.pm

@@ -38,28 +38,28 @@ __PACKAGE__->belongs_to(
   "subscriber",
   "NGCP::Schema::Result::provisioning_voip_subscribers",
   { "foreign.id" => "self.subscriber_id" },
-  { is_deferrable => 1, on_delete => "CASCADE", on_update => "CASCADE" },
+  { cascade_copy => 0, cascade_delete => 0 },
 );
 
 __PACKAGE__->belongs_to(
   "group",
   "NGCP::Schema::Result::provisioning_voip_subscribers",
   { "foreign.id" => "self.group_id" },
-  { is_deferrable => 1, on_delete => "CASCADE", on_update => "CASCADE" },
+  { cascade_copy => 0, cascade_delete => 0 },
 );
 
 __PACKAGE__->has_many(
   "groups",
   "NGCP::Schema::Result::provisioning_voip_subscribers",
   { "foreign.id" => "self.group_id" },
-  { is_deferrable => 1, on_delete => "CASCADE", on_update => "CASCADE" },
+  { cascade_copy => 0, cascade_delete => 0 },
 );
 
 __PACKAGE__->has_many(
   "subscribers",
   "NGCP::Schema::Result::provisioning_voip_subscribers",
   { "foreign.id" => "self.subscriber_id" },
-  { is_deferrable => 1, on_delete => "CASCADE", on_update => "CASCADE" },
+  { cascade_copy => 0, cascade_delete => 0 },
 );
 
 sub TO_JSON {