Release Event Hubs July 2020 update for JavaScript

[ramya-rao-a]

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

API design

• API to control greedy claiming of partitions by the Event Processor
• SharedKeyCredential

Features

• Receiver Redirect feature
• Smarter send APIs such that the user doesnt have to one by one fill the EventDataBatch to be able to send events
• Reduce Tracing debt [event-hubs][test] Re-enable the verification of test span attributes in "partitionPump telemetry" test #6724, Distributed tracing for Event Hub: do not populate schema in peer.address attribute #7109, [FEATURE REQ] Distributed tracing for EventHubs: add enqueueTime to Process span links #7112

[ramya-rao-a]

Renaming this epic to be for the July update.

In the May milestone, we released 5.2.0 of the @azure/event-hubs package with the below features

• Updates the EventHubProducerClient.sendBatch API to accept an array of events. PR [event-hubs] update sendBatch to accept lists of events #8622
• Adds compatibility with TypeScript versions 3.1 through 3.6+. PR [event-hubs] add downleveled types #8654
• Improves the performance of the EventDataBatch.tryAdd method. PR [event-hubs] improve EventDataBatch.tryAdd performance #8637

In the June milestone, we will focus on design for the below and implementing them in the July milestone.

• Receiver Redirect
• SharedKeyCredential
• Customizing Load balancing strategy

[ramya-rao-a]

Receiver Redirect and SharedKeyCredential features are moved to the Backlog

Version 5.2.2 was released with bug fixes
Version 5.3.0-preview.1 was released with options to configure the load balancing feature

See Changelog for more details