Azure Load Testing support for JMeter 5.5

Azure Load Testing now uses Apache JMeter version 5.5 for running load tests. You can now use Open Model Thread Group and run your scripts and plugins on Java 17 with the new version. Learn more about JMeter 5.5: <https://jmeter.apache.org/changes.html> Learn more about Azure Load Testing: <https://aka.ms/malt-docs> * Azure Load Testing * Features * [ Azure Load Testing](https://azure.microsoft.com/en-gb/products/load-testing/)