Instrumenter instrumentation version and schema url

[jack-berg]

I was browsing Instrumenter code and noticed that the the instrumentation version passed when obtaining the tracer is Instrumentation.VERSION. See code here.

My understanding is that the goal is to have folks instrument their libraries with Instrumenter, in which case it will be incorrect to include the version of the artifact that contains Instrumenter. We'll want callers to specify the version of the library they're instrumenting, right?

Also noticed:

• No version is passed when obtaining a meter provider. We'll probably want to be consistent.
• No optional is available for specifying the schema url in the tracer or meter. And what should the schema url be anyway? The Instrumenter provides tools to make it easier to follow the semantic conventions, but someone could use it and still violate them.

Just wanted to call these out so we can sort out the desired behavior.

[trask]

linking related issue: #2761

[laurit]

version added in #4611

My understanding is that the goal is to have folks instrument their libraries with Instrumenter, in which case it will be incorrect to include the version of the artifact that contains Instrumenter. We'll want callers to specify the version of the library they're instrumenting, right?

It should be the version of instrumentation library not the version of instrumented library