support inject agent/sidecar through opentelemetry-operator annoatatons.

[JaredTan95]

support inject agent/sidecar through opentelemetry-operator annoatatons.

I found we packaged otel agent jar into docker images, and set default jvm options.

https://github.com/open-telemetry/opentelemetry-demo/blob/main/src/adservice/build.gradle#L103
https://github.com/open-telemetry/opentelemetry-demo/blob/main/src/adservice/Dockerfile#L32

But ,I think this way maybe couldn't works well with opentelemetry-operator.

Describe the solution you'd like:

I wuold like to remove default jvm options and use JAVA_TOOL_OPTIONS env in dockerfile.
So that, uses could use their own or deffirent versions agent. and It also could be override by opentelemetry-operator sidecar.