title: Add http request info to sentry from another thread
body: <p>We're using a log4j appender to send errors to sentry from our tomcat webapp. This works great for errors that occur in the main thread of a request -- we get all the extra http info like url, request params, cookies, headers, etc.</p>
  
  <p>But some of our requests spawn other threads to do stuff using <code>org.springframework.core.task.TaskExecutor.execute()</code>. When we log errors in these threads, we get very little information in sentry. Is there anyway to attach the context from the parent thread to the error?</p>