Add ability to run Concord test jobs to Flagger's Loadtester

Hi,

My company is pretty big on using Concord for running integration tests, so I created a custom image to be able to run such tests from a web-hook.

Since the Loadtester can run Helm tests and Bats tests, would there be any interest in adding Concord tests?

https://concord.walmartlabs.com/

Thanks