opentelemetry-2.2.1

🐛 Bug fixes

• Fix risk of NullPointerException when restarting a master with ongoing pipeline 5e3815e (by @cyrille-leclerc )
• Fix slow risk of OutOfMemoryError 9679247 (by @cyrille-leclerc )

Full Changelog: opentelemetry-2.2.1...opentelemetry-2.2.0