🚧 Add step to wrap the OTEL context and mask the credentials

[v1v]

🚧

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This step provides a wrapper to bind the OTEL environment variables and mask any credentials such as the one provided in OTEL_EXPORTER_OTLP_HEADERS.

A similar step can be seen done in the shared library -> https://github.com/elastic/apm-pipeline-library/blob/master/vars/withOtelEnv.groovy

Rationale

Avoid exposing any sensitive credentials with some Masked support

Questions

• What do you think?
• Should we merge Add createSpan step to instrument explicitly the library or pipelines #84 with one step only?
• Package name?

Tasks

• Finish the implementation
• Define the signature
• Add UTs