Semconv codegen should produce different constant names if attribute is renamed _ -> ``

[lmolkova]

Description

Code generator generates the same attribute name constant for attribute.name and attribute_name. As a result, if attribute is renamed (_ is changed to . or vice versa), the value of attribute changes, but the name stays the same.

It's ambiguous - see open-telemetry/semantic-conventions#1031 and open-telemetry/semantic-conventions#1118 for the discussion.

Based on open-telemetry/semantic-conventions#1118, the semconv recommendation would be to:

• Remove _ when generating any constants in the code (fields, methods, class names, etc)
• Semconv will prohibit attribute renames that are limited to adding/removing _

This PR demonstrates the result of such naming policy change.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been added
• Documentation has been updated

[lmolkova]

Closing this one as not viable (constants without _ as AWSELASTICBEANSTALK are not just ugly, but also unreadable) - open-telemetry/semantic-conventions#1118 (comment)

xrmx#1 is an alternative.