Fixed delete when a configuration provider is selected from the tree

 https://bugzilla.redhat.com/show_bug.cgi?id=1364966

app/controllers/provider_foreman_controller.rb

@@ -88,6 +88,7 @@ def edit
   def delete
     assert_privileges("provider_foreman_delete_provider") # TODO: Privelege name should match generic ways from Infra and Cloud
     checked_items = find_checked_items # TODO: Checked items are managers, not providers.  Make them providers
+    checked_items.push(params[:id]) if checked_items.empty? && params[:id]
     providers = ManageIQ::Providers::ConfigurationManager.where(:id => checked_items).includes(:provider).collect(&:provider)
     if providers.empty?
       add_flash(_("No %{model} were selected for %{task}") % {:model => ui_lookup(:tables => "providers"), :task => "deletion"}, :error)