Migrate fabricators to factory bot factories (#626)

* Remove factory_girl include from dev rake task

No longer needed after 92b125b4a7

* Add missing factories

* Use FactoryBot factories instead of fabricators

* Remove all fabricators

* Remove unused method

* Remove fabrication gem

* Rename FactoryGirl to FactoryBot

https://robots.thoughtbot.com/factory_bot

spec/models/concerns/domain/force_delete_spec.rb

@@ -4,11 +4,15 @@ RSpec.describe Domain do
   it { is_expected.to alias_attribute(:force_delete_time, :force_delete_at) }
 
   before :example do
-    Fabricate(:zone, origin: 'ee')
+    create(:zone, origin: 'ee')
   end
 
   it 'should set force delete time' do
-    domain = Fabricate(:domain)
+    domain = build(:domain)
+    domain.nameservers.build(attributes_for(:nameserver))
+    domain.nameservers.build(attributes_for(:nameserver))
+    domain.save!
+
     domain.statuses = ['ok']
     domain.schedule_force_delete