SWITCHYARD-1569 Camel exchange bus includes transient context properties in copy()
[SWITCHYARD-1391] - Enable HTTP proxy support in gateways
SWITCHYARD-1557 migrate unit tests to use ServiceMetaData
SWITCHYARD-1549 JCA component creates message composers in handle()

Create the message composer within a constructor in the RecordHandler and use that within handle().
[SWITCHYARD-1571] - Fix NPE for in-only MEP service binding