Breaking change: logging.useUTC was prematurely removed from product in 6.5

[ppf2]

Kibana version: 6.5.0

logging.useUTC is no longer a valid setting in 6.5.0. logging.timezone works.

 FATAL  ValidationError: child "logging" fails because ["useUTC" is not allowed]

However, this breaking change is not supposed to happen until 7.0.

I am not sure what the right process is here. Can we still back out this change from the 6.5 branch? It's probably too late right? If so, we will have to make sure we document it :)

Currently, our Kibana doc shows no breaking changes in 6.5.

@AlonaNadler

[elasticmachine]

Pinging @elastic/kibana-operations

[epixa]

@jbudz This seems like a regression related to the useUTC change you did that we need to fix in 6.x.

[jbudz]

I removed the breaking change label. It's a bug/regression/break but not a planned one, if we want red we probably want the blocker label.

#26053 will fix this.

[jbudz]

And docs #26055

[ppf2]

Thanks @jbudz !