Move EMS factory from core repo to plugin repo

With this commit we move the factory which was originally meant to
reside in core repo into our base repo.

Signed-off-by: Miha Pleško <miha.plesko@xlab.si>

Author: Miha Pleško

spec/factories/ext_management_system.rb

@@ -1,4 +1,18 @@
 FactoryBot.define do
+  factory :ems_azure_stack,
+          :aliases => ["manageiq/providers/azure_stack/cloud_manager"],
+          :class   => "ManageIQ::Providers::AzureStack::CloudManager",
+          :parent  => :ems_cloud
+
+  factory :ems_azure_stack_with_authentication,
+          :parent => :ems_azure_stack do
+    azure_tenant_id { "ABCDEFGHIJABCDEFGHIJ0123456789AB" }
+    subscription { "0123456789ABCDEFGHIJABCDEFGHIJKL" }
+    after :create do |x|
+      x.authentications << FactoryBot.create(:authentication)
+    end
+  end
+
   factory :ems_azure_stack_with_vcr_authentication, :parent => :ems_azure_stack do
     zone do
       _guid, _server, zone = EvmSpecHelper.create_guid_miq_server_zone