Impossible to configure logging format when using zap logger

[socketpair]

zap logger is the best, but unfortunately it's impossible in Etcd server to change logging format. zap logger is able to log as plaintext, but JSON format settings is hardcoded in Etcd. Please add an option to change format to "console" i.e. plaintext. My use case is logging to Journald. It's not convenient for me to log JSONs to journald.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed after 21 days if no further activity occurs. Thank you for your contributions.

[socketpair]

Still actual

[hexfusion]

fixed via #13339

[hexfusion]

etcd --log-format console