Add support for polling as a service

Two new options

• PYPOLLER - default, deprecated, needs Python 2.7
• PYSERVICE - Dispatcher service, recompile required

HEADS UP HEADS UP

Polling via cron job is now deprecated. Please use the Dispatcher.

LibreNMS will be dropping support for PHP 7.1 and Python 2 in the next release
expected May 31 2020. see https://community.librenms.org/t/dropping-support-for-php-7-1-and-python-2/11851

Your existing crontab entries for the PYPOLLER option will be going away.

You can migrate to the PYSERVICE option of LibreNMS now.

PR: 246105
Submitted by: Dries Michiels <driesm.michiels@gmail.com>