We recently reverted LSF integration test removal commit due to a reason, Lumberjack events weren't parsed correctly with JSON codec. With this task, we need to remove LSF integration tests and add test cases for Lumberjack event to make the consistency.
Description
We recently reverted LSF integration test removal commit due to a reason, Lumberjack events weren't parsed correctly with JSON codec. With this task, we need to remove LSF integration tests and add test cases for Lumberjack event to make the consistency.