Satellite6 or Capsule stops processing pulp tasks

Issue

• Satellite's tasks like Actions::Katello::Repository::Sync or Actions::Katello::Host::UploadPackageProfile or Actions::Katello::Host::GenerateApplicability or Actions::Katello::ContentView::Publish (or Capsule sync for Capsule) are pending for many hours without a progress.
• Dynflow steps are inwaiting on pulp to start the task status, optionally they timeout after 1 hour with RestClient::Exceptions::ReadTimeout error.