Remove usage of ansicolors

Ansicolors has a bug that causes builds logs to be huge
(several hundreds MB). Issue occurs randomly. As a result
Jenkins master spends most of the time waiting for the log
files written to GlusterFS.

Link to upstream bug in plugin:
https://github.com/jenkinsci/ansicolor-plugin/issues/67

Change-Id: Ic9e4b56da37ecf22a0b798a6ca6c93d45c24d231
Closes-bug: PROD-13692
3 files changed