Fixes #36878 - Override host bulk destroy

app/controllers/katello/concerns/api/v2/hosts_controller_extensions.rb

@@ -3,6 +3,7 @@ module Concerns
     module Api::V2::HostsControllerExtensions
       extend ActiveSupport::Concern
       include ForemanTasks::Triggers
+      require 'active_support/core_ext/string/inflections'
 
       module Overrides
         def action_permission
@@ -24,6 +25,14 @@ def destroy
           process_response(:object => @host)
         end
 
+        def bulk_destroy
+          destroyed_count = @hosts.count
+          @hosts.in_batches.each_record do |host|
+            Katello::RegistrationManager.unregister_host(host, :unregistering => false)
+          end
+          process_response(true, { :message => _("Deleted %{host_count} %{hosts}") % { :host_count => destroyed_count, :hosts => 'host'.pluralize(destroyed_count) }})
+        end
+
         api :PUT, "/hosts/:host_id/host_collections", N_("Alter a host's host collections")
         param :host_id, :number, :required => true, :desc => N_("The id of the host to alter")
         param :host_collection_ids, Array, :required => true, :desc => N_("List of host collection ids to update")