the poller is now a separate (python-)module
- 3 categories of polled parameters:
- regular
- dynamic: accelerated when module is busy
- slow: less frequent, with lower priority
- several modules might share a poller. this makes sense, when a
they share a common communicator
- modules using the new poller must define pollerClass
- pollerClass may be define even an other poller implementation
- the old simple poller is still used on Readables without pollerClass
- the poller can not be configured in the config file only, as the
poll attributes have special values for this poller
Change-Id: Ifd811beeb45733bcbf801608ade877a3a601c24a
Reviewed-on: https://forge.frm2.tum.de/review/c/sine2020/secop/playground/+/21066
Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>
Tested-by: JenkinsCodeReview <bjoern_pedersen@frm2.tum.de>
