Revert "[travis] Avoid pip progress bar which can increase the log size substantially"
Revert "[travis] Avoid pip progress bar which can increase the log size substantially"

This reverts commit 28a2181d28cdb50daa1a20ea5146e41ffa9eaf90.

tiagofrepereira2012/bob.extension,tiagofrepereira2012/bob.extension,tiagofrepereira2012/bob.extension,tiagofrepereira2012/bob.extension