Add AnsiColor plugin to Jenkins
Add AnsiColor plugin to Jenkins

See https://wiki.jenkins-ci.org/display/JENKINS/AnsiColor+Plugin
SethTisue/scala-jenkins-infra,lrytz/scala-jenkins-infra,retronym/scala-jenkins-infra,SethTisue/scala-jenkins-infra,SethTisue/scala-jenkins-infra,adriaanm/scala-jenkins-infra,retronym/scala-jenkins-infra,adriaanm/scala-jenkins-infra,adriaanm/scala-jenkins-infra,scala/scala-jenkins-infra,lrytz/scala-jenkins-infra,retronym/scala-jenkins-infra,lrytz/scala-jenkins-infra,scala/scala-jenkins-infra