Added capturing of faas.name

[AlexanderWert]

Description

• With a mapping model of N:1 between lambda functions and an APM service in Elastic, we cannot rely on the service.name to represent the function name.
• Though faas.id contains the ARN of the function and with that also the function name in one of the segments, it's only an implicit assumption that is only true for AWS Lambda (but potentially not for other serverless functions, e.g. Azure functions, GCP functions). Thus, it's reasonable to capture the function name explicitly in a new field faas.name.
• Same with faas.version

This is a small enhancement

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• Start Time: 2022-02-25T05:13:00.841+0000

• Duration: 3 min 13 sec

[akhileshpok]

Hi Alex,

This looks like a good improvement! Thanks