Update LogRecord API to set and make use of context to set trace id / span id / trace flags,#4668

lzchen merged 4 commits intoopen-telemetry:mainopen-telemetry/opentelemetry-python:mainfrom

DylanRussell:add_context_to_logrecordDylanRussell/opentelemetry-python:add_context_to_logrecordCopy head branch name to clipboard