logging-{winston,bunyan} should integrate well with Logging UI and with Error Reporting

[ofrobots]

Originally raised here #1977 (comment).

[danoscarmike]

@ofrobots can you confirm that this is does not change the surface?

[ofrobots]

@danoscarmike Do you mean if this is a semver major change on the logging API?

Actually the concrete pull request fixing this issue is here: #1997

This does not affect the logging module API at all. It is a behaviour change in how the logging-winston and logging-bunyanmodules format messages, but this still isn't a semver major change. These said modules are still marked 'experimental' so this should be okay.