Consolidate OTLP interceptor implementations

[aygp-dr]

Issue Description

There are inconsistencies between the script implementation and Makefile targets for the OTLP interceptor.

Current issues:

• scripts/otlp-http-interceptor.sh exists but isn't directly referenced in Makefile
• Makefile has otlp-interceptor and otlp-interceptor-verbose targets that use netcat directly
• Duplicated functionality between shell script and Makefile targets

Proposed Changes:

1. Either use scripts/otlp-http-interceptor.sh in the Makefile targets
2. Or remove the redundant script if it's not needed
3. Consolidate the implementation to avoid maintenance issues
4. Ensure consistent parameter handling between implementations

Impact:

Having multiple implementations for the same functionality can lead to confusion and maintenance challenges.