Support sub-millisecond precision for start/end times on Java 9+ #2600
Description
The OpenTelemetry SDK supports sub-millisecond precision for start/end times on Java 9+ via multi-release jar file.
But I checked under a debugger, while running Java 11, and the javaagent is not using io.opentelemetry.sdk.internal.Java9VersionSpecific, and so we are only getting millisecond precision on start/end times.