Prevent RabbitMQ from logging info-level messages

[dmitrii-fediuk]

I do not need such records in the RabbitMQ log:

2020-02-12 17:26:20.258 [info] <0.267.0> Running boot step pre_boot defined by app rabbit
2020-02-12 17:26:20.258 [info] <0.267.0> Running boot step rabbit_core_metrics defined by app rabbit
2020-02-12 17:26:20.259 [info] <0.267.0> Running boot step rabbit_alarm defined by app rabbit
2020-02-12 17:26:20.263 [info] <0.273.0> Memory high watermark set to 12737 MiB (13355894374 bytes) of 31842 MiB (33389735936 bytes) total
2020-02-12 17:26:20.268 [info] <0.275.0> Enabling free disk space monitoring
2020-02-12 17:26:20.268 [info] <0.275.0> Disk free limit set to 50MB
2020-02-12 17:26:20.271 [info] <0.267.0> Running boot step code_server_cache defined by app rabbit

Related to #1

[dmitrii-fediuk]

How to prevent RabbitMQ from logging info and debug-level messages?