[test] Avoid error logging to print noisy output during tests

[pandafy]

Run tests (notice it outputs a lot of things)

 $ ./runtests.py 
Creating test database for alias 'default'...
System check identified no issues (0 silenced).
.............................................................{'device': ['Device Firmware with this Device already exists.']}
................................................SoftTimeLimitExceeded raised in batch_upgrade_operation task
..SoftTimeLimitExceeded raised in upgrade_firmware task
.

Checkout the following functions:

• https://github.com/openwisp/openwisp-utils#openwisp_utilstestscapture_stdout
• https://github.com/openwisp/openwisp-utils#openwisp_utilstestscapture_stderr
• https://github.com/openwisp/openwisp-utils#openwisp_utilstestscapture_any_output

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Take reference from openwisp/openwisp-controller#366

[b-thebest]

hello, Can I take up this issue and work on it?

[devkapilbansal]

Sure @b-thebest, go ahead

[b-thebest]

@devkapilbansal I have one small doubt. Should I remove full stop logging on console also or only errors ?

[devkapilbansal]

It would be better if you can remove those dots too.

[nemesifier]

Wait a minute, for the dots you mean ..........? That's the standard behavior and we should not remove it @devkapilbansal @b-thebest

[RahulPalve]

hey, I want to work on this, It appears that extra verbose msgs are from logging