Support Java auto-instrumentation image 2.x

[pavolloffay]

Component(s)

No response

Is your feature request related to a problem? Please describe.

Crated from #2514 (comment)

The Java agent 2.x has several breaking changes https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases/tag/v2.0.0:

• exporter changed to OTLP HTTP
• instrumentation changes

Describe the solution you'd like

Operator should configure HTTP exporter if 2.x java agent is used.

Describe alternatives you've considered

No response

Additional context

No response

[TylerHelmuth]

We should support publishing a 2.x image for the operator to use if configured, but continue to default to the 1.x image. I believe we'll also need to update some CI to support publishing both a 1.x and 2.x image for the next 6 months. I can take a look at that.

[pavolloffay]

The image gets published when https://github.com/open-telemetry/opentelemetry-operator/blob/main/autoinstrumentation/java/version.txt#L1 changes. It should be fine to use it for both version streams.

[TylerHelmuth]

@pavolloffay you're right. I coded up a solution that let's us maintain 2.x and 1.x versions simultaneously, but if you're ok with the value in versions.txt moving back and forth between 1.x and 2.x that is simpler.