…e() (#798)

Allows to opt-out auto populate log entry metadata on write in the write() API and Logging instance levels.
Tests WriteOption to out-out  auto populating metadata.
Tests LoggingOption to out-out  auto populating metadata.
Tests default LoggingOption for auto populating metadata.
Refactors LoggingOptions tests.
Refactors LoggingOptions auto populate metadata getter method.
Fixes cast compilation warning.

Populate empty metadata fields of each log entry on write().

Adds metadata auto-population flag to JUL handler.
Adds metadata auto-population flag to logging config file.
Forwards metadata auto-population flag via WriteOption to write() calls.
Refactors JUL handler tests to remove duplication, unused calls and warnings

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

#812)

Implements populateMetadata() API.
Changes Logging.write() API to populate the provided list of log entries using the new API.
Refactors SourceLocation.fromCurrentContext() to use a list of exclusion instead of the call stack depth level as parameter.
Adds configuration `populateToStdout` to `LoggingConfig`.
Use the new configuration within `LoggingHandler` to print to STDOUT instead of ingesting the log by calling Logging.write().
Refactor LoggingImpl, LoggingHandler and unit tests.

rename unit tests to reflect the right configuration name being tested.
test log enhancers when redirecting to stdout.

This reverts commit c8b0ee8.

…ting JUL handler to STDOUT (#821)

Add description about automatic metadata population and redirection of JUL logs to stdout to README.
Reverse the use of 'appendComma' flag
Rename populateMetadata? flags to make the logic clear

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

…eapis/java-logging into minherz/structured_logging

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

…eapis/java-logging into minherz/structured_logging