🐛 Charset quality factor

[ryandens]

Description

Handle charset with quality factor. We came across this log message in a service that uses this java agent:

[opentelemetry.auto.trace 2021-06-29 16:43:30:382 +0000] [reactor-http-epoll-3] ERROR org.hypertrace.agent.core.instrumentation.utils.ContentTypeCharsetUtils - Could not parse encoding utf-8;q=.2 to charset, using default ISO-8859-1

Testing

Added a unit test with a valid Content-Type header containing a charset with a quality factor.

Checklist:

• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules

Documentation

Make sure that you have documented corresponding changes in this repository or hypertrace docs repo if required.