make logger on TLSConfig global

[khushijain21]

What does this PR do?

This PR makes the logger on TLSConfig global - because it is required to be able to set this field even outside this package. One such example is in beatsauthextension where we directly configure TLSConfig

https://github.com/elastic/opentelemetry-collector-components/blob/main/extension/beatsauthextension/config.go#L28

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works

[elasticmachine]

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