fix(spring-boot): avoid logging admin user on INFO

[tasso94]

Logs admin user on DEBUG.

related to #3956

[mboskamp]

👍 Looks good, nice improvement.
🙃 I would like to change the title of the issue to In Spring Boot Starter, admin user information is logged on INFO (added information). I think it is clearer what kind of data is logged this way.
🔧 We covered only one of the three affected loggers from the Expected Behavior section of this ticket. I think we could add tests for the other affected loggers as well.

[tasso94]

🔧 We covered only one of the three affected loggers from the Expected Behavior section of this ticket. I think we could add tests for the other affected loggers as well.

Do you have an idea what these tests could look like? The log that writes all registered process engine plugins is written before the CreateAdminUserConfiguration is actually registered, so it doesn't contain it. Asserting this log would require restructuring the test design. For the log that indicates creating the admin user has been skipped, as a black box test, we would need to persist the database and restart the engine. Both tests are technically possible but require a certain amount of effort. I think that investing in this effort pays little. Let me know if I'm missing something, and writing these tests is easier than I anticipated.

🙃 I would like to change the title of the issue to In Spring Boot Starter, admin user information is logged on INFO (added information). I think it is clearer what kind of data is logged this way.

I adjusted the title.

[mboskamp]

You are probably right. It's too much effort. I agree we should not do it.