use hasKey/ternary for boolean values with defaults

[frodsan]

Problem

We are passing the following config:

logConnections    = false
logDisconnections = false

but the generated .toml file still sets the defaults:

log_connections = true
log_disconnections = true

It seems like boolean values using | default always evaluated to their default, even when explicitly set to false. So false | default "true" returns "true" (the default) instead of the passed value.

Solution

Replace | default with hasKey ... | ternary for all boolean fields. This checks whether the key was explicitly provided rather than relying on truthiness: