Fix ServerIntegratedBenchmark

[anuraaga]

Fixes #3646

I found some issues

• log backend is log4j, not simple logger so lack of file prevented any logging to debug. I figured replacing the config is better than tracking out the log4j transitive
• The netty version override didn't seem to be kicking in. Sorry, I'm not generally experienced with Maven and also rusty in Java so just redefining is the only approach I could find
• Something about the healthcheck change doesn't seem to interact well with testcontainers. Doing a direct ping without involving curl instead seems fine to me

[codefromthecrypt]

great. thanks for taking the time on this!