* Add retry internal package
* Use retry package in connection
* Use retry package for otlpconfig
* Use the retry package in otlptracegrpc
* Use the retry package in otlptracehttp
* Add changes to CHANGELOG
* Lint internal
* Update otlptracehttp tests
* Update dependencies
* Add retry tests to otlptracehttp
* Remove TestRetry from otlptracehttp