supernode writes debug logs even if configured with debug: false

[jayme-github]

Ⅰ. Issue Description

I do see a bunch of loglevel DEBUG logs in app.log, although I have configured debug: false in the supernode config.

Ⅱ. Describe what happened

See above.

Ⅲ. Describe what you expected to happen

Don't log DEBUG messages.

Ⅳ. How to reproduce it (as minimally and precisely as possible)

1. Set debug: false in supernode config
2. Pull a file using dfget, curl /metrics, ...

Ⅴ. Anything else we need to know?

Ⅵ. Environment:

• dragonfly version: v1.0.6
• OS (e.g. from /etc/os-release): Debian 9
• Kernel (e.g. uname -a): 4.19.0-0.bpo.14-amd64
• Install tools: docker 18.06.3