MLServer to hide http health request logs to avoid polluting the logs

[axsaucedo]

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As part of the Seldon Core addition https://github.com/SeldonIO/seldon-core/pull/4028 which moves the TCP ready checks into proper HTTP request ready checks to v2/health/ready there is now a lot of noise from the readiness checks every 5 seconds. We should explore ways in which we avoid this noise, perhaps making it completely silent by default, or eventually once the prometheus server is created on a separate server this could also be added (And both of them could be muted)

[saeid93]

@axsaucedo have you found a solution to this? I also cannot read the logs.