print stout output as it comes

[jacintoArias]

Output is striped and print via our logger, however tabs and colors are lost, which is problematic to read some outputs like yarn scripts or tests reporters...

[jcozar87]

Removing .strip() from stdout and stderr binary strings should solve the problem of this chaotic structure of outputs.

Respect to the colors, it seems that if no tty is detected, color codes are removed. We can use a dummy tty just to preserve those codes: stackoverflow