Checkmk Werk 13492: Notification plugins: Fix proxy setting "Connect without proxy"

ID: 13492 Title: Notification plugins: Fix proxy setting "Connect without proxy" Component: Notifications Level: 1 Class: Bug fix Version: 2.1.0i1 For some notification plugins, proxy settings can be configured. One of the available options is to not use any proxy ("Connect without proxy"). This setting is intended to also bypass proxy servers defined via environment variables (<tt>HTTP_PROXY</tt>, ...), which did not work.