Don't include empty prefix with EnvironmentVariablesConfigurationProvider

[JamesNK]

Don't include an empty prefix for EnvironmentVariablesConfigurationProvider. Makes config debug view cleaner to view:

Note that this is a runtime change to ToString. It needs to be modified in ToString because it's used to build up the debug view string.

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Issue Details

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Don't include an empty prefix for EnvironmentVariablesConfigurationProvider. Makes config debug view cleaner to view:

Note that this is a runtime change to ToString. It needs to be modified in ToString because it's used to build up the debug view string.

Author:	JamesNK
Assignees:	JamesNK
Labels:	area-Extensions-Configuration
Milestone:	-

[tarekgh]

Would that be a breaking change for any user calling ToString in non-debugging scenarios?

[JamesNK]

Maybe, which is why I called it out. However, I don't know why anyone would want to parse the result of ToString. All the configuration provides override ToString for debugging. It's not in an easily parsable format.

[tarekgh]

I don't know why anyone would want to parse the result of ToString.

I understand but nobody knows. Would it make sense if we proceed with this is to file a breaking charge issue? https://github.com/dotnet/docs/issues/new?assignees=gewarren&labels=breaking-change%2CPri1%2Cdoc-idea&projects=&template=breaking-change.yml&title=%5BBreaking+change%5D%3A+

[JamesNK]

I don't think we'd create a breaking change issue in dotnet/aspnetcore for this level of change, but dotnet/runtime might have a different standard. It's up to you.

[JamesNK]

@tarekgh Ok to merge?