This makes sure there cannot be JMS problems related to use of hyphenated headers unless someone overrides the `Propagation.Factory`. To avoid this, we set non-remote spans to B3 single format as done on the 3.x branch here: https://github.com/spring-cloud/spring-cloud-sleuth/pull/1607/files#diff-db43b7e91bd69d063333c20b947c902bR83-R84