Set of properties to promote on a OneOf resource has been hard coded

[theunrepentantgeek]

Describe the current behavior

As a part of providing support for Kusto resources, we needed to hande the case where a resource is directly defined as a OneOf object.

Normal handling of OneOf types involves pushing all the properties out to the options (leaves) of the type, but this does not work for the root of a resource as we have certain required properties, starting with Name.

We now have support for this (see PR #4589), but that new stage has been hard coded to promote just the Name property.

There's no other current need to promote other one-of properties to the root - but @super_harsh suggested (correctly!) that we should create an issue to track the hard coded value - see promote_root_oneof_properties.go for all the gory details.