Adding new optional `post_injection_hook` to `RequestsInstrumentor`#3657

eddawley wants to merge 8 commits intoopen-telemetry:mainopen-telemetry/opentelemetry-python-contrib:mainfrom

eddawley:requests-post-injection-hookeddawley/opentelemetry-python-contrib:requests-post-injection-hookCopy head branch name to clipboard