Log levels could be specified per pipeline

[andsel]

With PR #11108 (resolving issue #10427) was introduced the feature to separate logs per pipeline (--pipeline.separate_logs=true/false) where each pipeline has its log appender / file.
It could be also useful to define a different log level for each pipeline. This feature could work in both cases, when each pipeline has it's own log file and also when all logs are in the same file.

[treknado]

+1

as in #10427 already discussed, it would also be useful, to specify different logfile targets for each pipeline.

[flexitrev]

Watching for additional interest or activity.