Fix missing log file and apply logging level - Closes #3123

[michielmulders]

What was the problem?

The file logs/testnet/lisk.log does not get created, no log message are written on disk.

How did I fix it?

Wrong parameter name was used, creating the right folder and file failed because of that.

How to test it?

Run any network and check if logs/{network}/lisk.log gets created.

Review checklist

• The PR resolves Log file is missing and incorrect log level #3123
• All new code is covered with unit tests
• All new code was formatted with Prettier
• Linting passes
• Tests pass
• Commit messages follow the commit guidelines
• Documentation has been added/updated

[fchavant]

Are the first four commits from another PR that this one depends on?

[michielmulders]

@fchavant Yes, the bug fix for development, merged it to see if my tests fail/pass.
Will disappear once merge into development.

[fchavant]

The file config/testnet/config.json (with LISK_NETWORK=testnet) is now present however it contains debug level messages while config/default/config.json contains "fileLogLevel": "info", and config/testnet/config.json contains no fileLogLevel key; is this a separate bug?

[michielmulders]

@fchavant addressed the fix in this issue as well
Will edit the title and issue.
Please test from your side.

[fchavant]

logFileName and fileLogLevel now work as exepected.

[yatki]

just one minor change request