Log format reconfiguration for tserver/tmaster for underlying aggregation tool

[Tasneem9879]

Jira Link: DB-1758 Description:

This is a feature request for the ability to improve logging of tserver/tmaster and other surrounding logs of the underlying services operating a YB cluster.

Problem solved:

The use-case for this was that they wanted to send their logs into Azure's log collection (log analytics) agent. In order for this to work there are a couple of requirements.

• The date format from the log needs to be consistent and a common recognizable format which is not available currently. Right now the log format is not configurable. It is desired to enter a log format configuration so they can be properly integrated with log aggregation tools more easily.

Something with macros in a formatter like:

“%D/%M/%Y %h:%m:%s.%l [%E] %X” which will be formatted as “02/04/2021 03:35:14.32 [E0440] could not format log properly”

• Multi-line log entries are also not allowed.
• https://docs.microsoft.com/en-us/azure/azure-monitor/agents/data-sources-custom-logs lists the requirements.

Reference ticket: https://yugabyte.zendesk.com/agent/tickets/1054

[dotyjim-work]

I would like to suggest that we include the timezone in the timestamp.