Missing values in sign_params when using service 4012

[whysthatso]

using: ipizza 2.0.1
hey,
the scenario: using authentication service of lhv

when creating a request for service 4011 all is well

> Ipizza::Provider::Lhv.new.authentication_request
#<Ipizza::AuthenticationRequest:0x00561258b4c538
 @extra_params={"VK_ENCODING"=>"UTF-8", "VK_LANG"=>nil},
 @service_url="https://www.lhv.ee/banklink",
 @sign_params=
  {"VK_SERVICE"=>4011,
   "VK_VERSION"=>"008",
   "VK_SND_ID"=>"SOME OÜ",
   "VK_RETURN"=>"https://www.example.com/endpoint",
   "VK_DATETIME"=>"2016-12-14T16:24:01+0200",
   "VK_RID"=>nil,
   "VK_REPLY"=>"3012",
   "VK_MAC"=>
    "XyrU7R9m2jK5q/Q9iiJ9ZJrhEhHExgwqgY+SPvjt10/1oRAcZWi5Jz1...."}>

however, when forcing service 4012 with additional params, the resulting sign_params is missing the crucial VK_REC_ID (bank's id, which i also tried to add to the configuration yaml to no avail), and the VK_NONCE. For some reason only VK_RID got merged from that hash.

> Ipizza::Provider::Lhv.new.authentication_request( 4012, { vk_nonce: '1' , vk_rid: '1'})
#<Ipizza::AuthenticationRequest:0x00561258b03540
 @extra_params={"VK_ENCODING"=>"UTF-8", "VK_LANG"=>nil},
 @service_url="https://www.lhv.ee/banklink",
 @sign_params=
  {"VK_SERVICE"=>4012,
   "VK_VERSION"=>"008",
   "VK_SND_ID"=>"SOME OÜ",
   "VK_RETURN"=>"https://www.example.com/endpoint",
   "VK_DATETIME"=>"2016-12-14T16:27:12+0200",
   "VK_RID"=>"1",
   "VK_MAC"=>
    "VI3AyDMkEjgIfGQqgZmjK6h4Z8eyA3wxrLhnp1jt9e5xU6u..."}>

it's pretty weird, as the case statement in provider/base.rb seems pretty straight forward.

am i missing anything?

Add:
initializer in my rails app under config/initializers/banklink.rb:
Ipizza::Config.load_from_file Rails.root.join('config', 'banklink.yml')

config yml: like the example from readme, only addition:
rec_id: LHV
but that did nothing

[whysthatso]

@tanelj as you introduced this pattern, maybe you're the right one to talk to?