Dapr bulk publish - edit Dapr Cloudevent envelope via publish_metadata

[Ilai-Dabush]

In what area(s)?

/area docs

Describe the feature

The feature already exists via the single event publish. You can override certain CE fields using the publish_metadata object. In the bulk publish documentation it does not state that you can achieve the same things, but you can, via adding the Metadata map for each entry. Needs to be documented

Release Note

RELEASE NOTE: ADD override Cloudevent fields in bulk publish using the publish_metadata object documentation