Add ansicolor and ws-cleanup plugins.
Add ansicolor and ws-cleanup plugins.

Without them, the seed job prints warnings:

Warning: (CommonJobProperties.groovy, line 107) plugin 'ansicolor' needs to be installed
Warning: (CommonJobProperties.groovy, line 113) plugin 'ws-cleanup' needs to be installed

chamikaramj/beam,apache/beam,chamikaramj/beam,apache/beam,chamikaramj/beam,lukecwik/incubator-beam,chamikaramj/beam,lukecwik/incubator-beam,chamikaramj/beam,lukecwik/incubator-beam,apache/beam,chamikaramj/beam,lukecwik/incubator-beam,apache/beam,apache/beam,chamikaramj/beam,apache/beam,apache/beam,chamikaramj/beam,lukecwik/incubator-beam,lukecwik/incubator-beam,lukecwik/incubator-beam,lukecwik/incubator-beam,apache/beam,apache/beam,chamikaramj/beam,apache/beam,chamikaramj/beam,lukecwik/incubator-beam,lukecwik/incubator-beam,apache/beam