Expose changes to entity configuration at info log level

[lspxxv]

Feature Suggestion

A customer would like to monitor changes to entity and check configuration and would like these exposed at a less resource intensive log level.

Nov 01 17:43:22 sensu-ubuntu sensu-backend[2083]: {"action":"Update","component":"agentd","entity":"sensu-ubuntu","level":"debug","msg":"found 1 subscription(s) to unsubscribe from: [foo]","namespace":"default","time":"2022-11-01T17:43:22Z"}
Nov 01 17:43:22 sensu-ubuntu sensu-backend[2083]: {"agent":"sensu-ubuntu","component":"agentd","level":"debug","msg":"successfully unsubscribed from \"foo\"","namespace":"default","time":"2022-11-01T17:43:22Z"}

Changes to check configuration is already exposed at the info level but the logs provide little detail as to what was changed exactly at this time

Nov 01 17:45:48 sensu-ubuntu sensu-backend[2083]: {"component":"rbac","level":"debug","msg":"request authorized by the binding cluster-admin","time":"2022-11-01T17:45:48Z","zz_request":{"apiGroup":"core","apiVersion":"v2","namespace":"default","resource":"checks","resourceName":"check_cpu","username":"admin","verb":"update"}}
Nov 01 17:45:48 sensu-ubuntu sensu-backend[2083]: {"component":"store","key":"/sensu.io/checks/","level":"debug","msg":"watch revision updated to 197212 by header revision","time":"2022-11-01T17:45:48Z"}
Nov 01 17:45:48 sensu-ubuntu sensu-backend[2083]: {"component":"store","key":"/sensu.io/checks/","level":"debug","msg":"received event of type PUT","time":"2022-11-01T17:45:48Z"}
Nov 01 17:45:48 sensu-ubuntu sensu-backend[2083]: {"component":"schedulerd","level":"info","msg":"check configs updated","time":"2022-11-01T17:45:48Z"}
Nov 01 17:45:48 sensu-ubuntu sensu-backend[2083]: {"component":"schedulerd","level":"info","msg":"restarting scheduler","time":"2022-11-01T17:45:48Z"}
Nov 01 17:45:48 sensu-ubuntu sensu-backend[2083]: {"component":"schedulerd","level":"info","msg":"check schedule has not changed","name":"check_cpu","namespace":"default","scheduler_type":"interval","time":"2022-11-01T17:45:48Z"}

Possible Implementation

Context

Internal Ref - https://secure.helpscout.net/conversation/2054095592/30190?folderId=4465878

[asachs01]

Need some input from @portertech re: moving RBAC related messages to info rather than debug

[asachs01]

System doesn't currently have this level of granularity. This would require a LOT of changes in the product to be able to support this change. As it stands, Sensu doesn't have a concept of doing a diff--we could at the very least say "Something changed".