Major Description
Spinoff from SOLR-16536. It should now be possible to get rid of the explicit <tracerConfig> config in solr.xml and the pluggable TracerConfigurator class which is initialized in CoreContainer.
Instead, the opentelemetry plugin can self-register statically to the global OTEL instance. This will make it sufficient to enable the opentelemetry module to enable tracing. You can also enable/disable it with env OTEL_SDK_DISABLED.
Alternatively, if we are getting away with global instance (SOLR-16937), then SolrCore could discover the plugin using SPI or similar as opposed to explicit editing of solr.xml.
