[IAC-1730] - allow dropsonde to use other schedule services

[adrianiurca]

In order to have Dropsonde packaged up with puppet server, we need to be able to use scheduler service from puppet server instead of using the cron provider from the host.
With this approach, we avoid altering customers' and users' machines to install a cron provider. We have no guarantee that users have installed a cron provider by default.

[puppet-community-rangefinder]

dropsonde is a class

that may have no external impact to Forge modules.

This module is declared in 0 of 578 indexed public Puppetfiles.

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