Add AnsiColor plugin to Jenkins

See https://wiki.jenkins-ci.org/display/JENKINS/AnsiColor+Plugin

Author: DarkDimius

recipes/_master-config-jenkins.rb

@@ -25,7 +25,7 @@
   })
 end
 
-%w(notification ssh-credentials groovy cygpath job-dsl build-flow-plugin rebuild greenballs build-timeout copyartifact email-ext slack throttle-concurrents dashboard-view parameterized-trigger).each do |plugin|
+%w(notification ssh-credentials groovy cygpath job-dsl build-flow-plugin rebuild greenballs build-timeout copyartifact email-ext slack throttle-concurrents dashboard-view parameterized-trigger ansicolor).each do |plugin|
   plugin, version = plugin.split('=') # in case we decide to pin versions later
   jenkins_plugin plugin
 end
@@ -37,4 +37,4 @@
 
 jenkins_plugin "github-oauth" do
   notifies :restart, 'runit_service[jenkins]', :immediately
-end
+end