Release Event Hubs April 2020 update for Python

[ramya-rao-a]

This is a parent issue tracking the work planned for Event Hubs for the April update.
Code complete date: April 3rd, 2020

API design

• In Progress Propose smarter send APIs such that the user doesnt have to one by one fill the EventDataBatch to be able to send events
• In Progress Propose API to control greedy claiming of partitions by the Event Processor

Features

• Receive in batches
• Code sample showing how to convert IotHub connection string to an Event Hubs compatible one which points to the built-in Event Hubs endpoint
• Code sample showing workaround needed for Event Hubs in Azure Stack
• Receiver Redirect feature
• Review current logging experience, come up with a plan to streamline and be consistent across languages for ease of customer support, tackle low hanging fruits

cc @YijunXieMS

[ramya-rao-a]

The April update which is a preview contained the below

• receive in batches
• Code sample showing workaround needed for Event Hubs in Azure Stack
• Code sample showing how to convert IotHub connection string to an Event Hubs compatible one which points to the built-in Event Hubs endpoint
• Add in missing system properites when reading from Iothub. Missing system properties when consuming messages from IotHub #10408

Rest of the work is being moved to the May update.

@YijunXieMS, Please provide a link to the April update here and close the issue

[YijunXieMS]

Released 5.1.0b1 on 04/06/2020
https://pypi.org/project/azure-eventhub/5.1.0b1/