Inserting meta_data of devices into info of corresponding DataNodeContainer rather than in scan_info
With @denolf we discussed that it could be useful to change the meta_data publishing of devices that are involved in the acq_chain in a way that their meta_data is published in the corresponding DataNodeContainer of the AcqDev instead of scan_info. Like that it is much simpler to correlate which meta_data corresponds to which device.