parameters with a common commandhandler need only one poller item Change-Id: Ie2e20cf7bcebc67ca96d58455323f01f528b25ab Reviewed-on: https://forge.frm2.tum.de/review/c/sine2020/secop/playground/+/21951 Tested-by: JenkinsCodeReview <bjoern_pedersen@frm2.tum.de> Reviewed-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de> Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>