Wrong Implicit log level overridding when --log-level argument is not provided

[jopemachine]

What Operating System(s) are you seeing this problem on?

Linux (x86-64)

Backend.AI version

main

Describe the bug

Even if I set the log-level to DEBUG in the toml file, the log-level is always overridden by the default value (INFO) from the CLI, resulting in the logging level always being set to INFO regardless of the config file's log-level.

As a result, it is not possible to change the log-level when using commands other than start-server that do not include the --log-level argument.

To Reproduce

1. Set the logging level to debug in the toml configuration file.
2. Run a command that does not include the --log-level argument, such as any command other than start-server.
3. Observe that the logging level is set to INFO instead of DEBUG.

Expected Behavior

The log-level set in the toml file should be respected, and commands that do not include the --log-level argument should use the log-level specified in the toml configuration.

Anything else?

No response