Generate retire requests from the base class name

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1731559

app/models/mixins/retirement_mixin.rb

@@ -11,7 +11,7 @@ module RetirementMixin
 
   module ClassMethods
     def make_retire_request(*src_ids, requester, initiated_by: 'user')
-      klass = (name.demodulize + "RetireRequest").constantize
+      klass = (base_class.name.demodulize + "RetireRequest").constantize
       options = {:src_ids => src_ids.presence, :__initiated_by__ => initiated_by, :__request_type__ => klass.request_types.first}
       set_retirement_requester(options[:src_ids], requester)
       klass.make_request(nil, options, requester)

spec/models/service/retirement_management_spec.rb

@@ -1,6 +1,7 @@
 describe "Service Retirement Management" do
   let(:user) { FactoryBot.create(:user_miq_request_approver) }
   let(:service_with_owner) { FactoryBot.create(:service, :evm_owner => user) }
+  let(:service_ansible_playbook) { FactoryBot.create(:service_ansible_playbook) }
 
   before do
     @server = EvmSpecHelper.local_miq_server
@@ -102,6 +103,12 @@
     expect(@service.retirement_warn).to eq(options[:warn])
   end
 
+  it "with a Service Ansible Playbook" do
+    expect(ServiceRetireRequest).to receive(:make_request)
+      .with(nil, {:src_ids => [service_ansible_playbook.id], :__initiated_by__ => 'user', :__request_type__ => "service_retire"}, user)
+    service_ansible_playbook.class.make_retire_request(service_ansible_playbook.id, user)
+  end
+
   it "with one src_id" do
     expect(ServiceRetireRequest).to receive(:make_request)
       .with(nil, {:src_ids => [@service.id], :__initiated_by__ => 'user', :__request_type__ => "service_retire"}, user)