Option to exclude certain ENV variables from auto-instrumentation

[dkPranav]

I believe these are the default ENVs injected when instrumentation.opentelemetry.io/inject-sdk annotation is added to a PodSpec,

OTEL_NODE_IP
OTEL_POD_IP
OTEL_SERVICE_NAME 
OTEL_RESOURCE_ATTRIBUTES_POD_NAME
OTEL_RESOURCE_ATTRIBUTES_NODE_NAME
OTEL_RESOURCE_ATTRIBUTES

I understand that we can explicitly pass these ENVs in the pod directly to override the default values. and also add an annotation to add custom attributes. But is there a way to exclude injection of them using the Intrumentation CR.

Our usecase example:
We are setting OTEL_SERVICE_NAME in the container image Dockerfile across many deployments.
We don't want the auto-instrumentation to inject this OTEL_SERVICE_NAME, so is there a way exclude injection of certain Env variables.

[jack-berg]

These environment variables aren't part of this repository. Transferring to to opentelemetry-operator, which I believe is responsible for setting these.

[jaronoff97]

I believe if you were to set it to be the identity i.e. OTEL_SERVICE_NAME=$OTEL_SERVICE_NAME that would propagate what you already have.