Cleanup instrumentation info-level logging

[hannahramadan]

When the agent instruments a customer's app, it records a log message about what is being instrumented, for example: Installing Fiber instrumentation. We often hard-code this log in instrumentation files. However, the method log_and_instrument, which is called whenever preprend or chain is used, also logs instrumentation and records a supportability metric. This results in cases where instrumentation notices are logged twice, or potentially not at all, and supportability metrics are not recorded.

def log_and_instrument(method, instrumenting_module, supportability_name)
  supportability_name ||= extract_supportability_name(instrumenting_module)
  NewRelic::Agent.logger.info("Installing New Relic supported #{supportability_name} instrumentation using #{method}")
  NewRelic::Agent.record_metric("Supportability/Instrumentation/#{supportability_name}/#{method}", 0.0)
  yield
end

We should review each instrumentation file to:

• Remove log messages if preprend or chain is being used
• Add a log statement if preprend or chain is not being used
• Record a supportability metric if preprend or chain is not being used
• Update Thor instrumentation to remove the log statement and add a comment about log_and_instrument so we can remember this

default_source.rb can be used to quickly determine if prepend or chain is avaliable or not.

dupe: #2516

[workato-integration]

https://new-relic.atlassian.net/browse/NR-227231

[fallwith]

Please re-test #2516 after closing this issue and then either close #2516 or specify that additional work still needs to be done to address it.