Allow skipping logs

[tiagotex]

The logs are helpful while setting up the metrics but create too much noise during regular operation.

I've implemented skipping log production by using an option. Let me know if you have alternative solutions or prefer not to handle this in the gem.

[sj26]

Thanks for the contribution!

Is this the repeated "Publishing Sidekiq CloudWatch Metrics" lines? Totally agree they are way too noisy.

What if, instead of adding a new logging configuration option, we changed the noisier lines to logger.debug which should be excluded by default by sidekiq's logger configuration?

[ndbroadbent]

I was looking for the same thing and found this PR. I think changing these to logger.debug would also be a good solution.

[sj26]

Thanks for this, but I've merged #39 which quietens logs by default. Please try it out.