Add skiplist build dependency to Makefile.TRAVIS.
Add skiplist build dependency to Makefile.TRAVIS.

smyrman/prometheus,PrFalken/prometheus,flier/prometheus,brian-brazil/prometheus,gesellix/prometheus,robbiet480/prometheus,bluecmd/prometheus,adamron1/prometheus,brancz/prometheus,rajthilakmca/prometheus,jbdalido/prometheus,GoogleCloudPlatform/prometheus,kzittritsch/prometheus,sudhi-vm/prometheus,alileza/prometheus,smyrman/prometheus,dsymonds/prometheus,jbdalido/prometheus,kzittritsch/prometheus,datajet-io/prometheus,tomwilkie/prometheus,keegancsmith/prometheus,justintung/prometheus,JavierZunzunegui/prometheus,trigrass2/prometheus,dpatel06/prometheus,dmilstein/prometheus,GoogleCloudPlatform/prometheus,datajet-io/prometheus,gcnonato/prometheus,amorken/prometheus,flier/prometheus,brian-brazil/prometheus,JavierZunzunegui/prometheus,wrouesnel/prometheus,mrwacky42/prometheus,tomwilkie/prometheus,fabric8io/prometheus,wndhydrnt/prometheus,tattsun/prometheus,sudhi-vm/prometheus,Gouthamve/prometheus,kzittritsch/prometheus,hustbill/prometheus,robbiet480/prometheus,brancz/prometheus,Gouthamve/prometheus,datajet-io/prometheus,fabxc/prometheus,yanghongkjxy/prometheus,dln/prometheus,amorken/prometheus,SaltedMan/prometheus-annotated,wrouesnel/prometheus,SaltedMan/prometheus-annotated,nicr9/prometheus,msiebuhr/prometheus,Stackdriver/stackdriver-prometheus,fabxc/prometheus,laushinka/prometheus,kangwoo/prometheus,wndhydrnt/prometheus,cit-lab/prometheus,wrouesnel/prometheus,agaoglu/prometheus,rajthilakmca/prometheus,AlekSi/prometheus,laushinka/prometheus,jmcfarlane/prometheus,jmcfarlane/prometheus,Colstuwjx/prometheus,thachmai/prometheus,iksaif/prometheus,SaltedMan/prometheus-annotated,jbdalido/prometheus,dalanlan/prometheus,jimmidyson/prometheus,adamron1/prometheus,mtanda/prometheus,dsymonds/prometheus,gcnonato/prometheus,RobertKielty/prometheus,dmilstein/prometheus,cit-lab/prometheus,dmilstein/prometheus,dmilstein/prometheus,smyrman/prometheus,mtanda/prometheus,gottwald/prometheus,slok/prometheus,ton31337/prometheus,agaoglu/prometheus,prometheus/prometheus,amorken/prometheus,keegancsmith/prometheus,GoogleCloudPlatform/prometheus,eliothedeman/prometheus,AlekSi/prometheus,JavierZunzunegui/prometheus,gesellix/prometheus,PrFalken/prometheus,prasincs/prometheus,robbiet480/prometheus,Dieterbe/prometheus,dalanlan/prometheus,agaoglu/prometheus,prasincs/prometheus,nicr9/prometheus,thachmai/prometheus,dalanlan/prometheus,abhishekamralkar/prometheus,abhishekamralkar/prometheus,gottwald/prometheus,Colstuwjx/prometheus,wndhydrnt/prometheus,Dieterbe/prometheus,adamron1/prometheus,Stackdriver/stackdriver-prometheus,bluecmd/prometheus,agaoglu/prometheus,yanghongkjxy/prometheus,trigrass2/prometheus,thachmai/prometheus,Stackdriver/stackdriver-prometheus,iksaif/prometheus,rajthilakmca/prometheus,prometheus/prometheus,gesellix/prometheus,dln/prometheus,abhishekamralkar/prometheus,ton31337/prometheus,iksaif/prometheus,wxdublin/prometheus,q3k/prometheus,gcnonato/prometheus,eliothedeman/prometheus,alileza/prometheus,prometheus/prometheus,kangwoo/prometheus,amorken/prometheus,justintung/prometheus,slok/prometheus,hustbill/prometheus,dsymonds/prometheus,iksaif/prometheus,eliothedeman/prometheus,ton31337/prometheus,bluecmd/prometheus,hustbill/prometheus,hustbill/prometheus,alileza/prometheus,tattsun/prometheus,SaltedMan/prometheus-annotated,sudhi-vm/prometheus,cit-lab/prometheus,prasincs/prometheus,jmcfarlane/prometheus,alileza/prometheus,Conorbro/prometheus,trigrass2/prometheus,Colstuwjx/prometheus,wxdublin/prometheus,fabxc/prometheus,Colstuwjx/prometheus,mtanda/prometheus,smyrman/prometheus,jmcfarlane/prometheus,laushinka/prometheus,AlekSi/prometheus,mtanda/prometheus,kangwoo/prometheus,tattsun/prometheus,justintung/prometheus,rajthilakmca/prometheus,flier/prometheus,yanghongkjxy/prometheus,keegancsmith/prometheus,fabric8io/prometheus,slok/prometheus,PrFalken/prometheus,kangwoo/prometheus,jimmidyson/prometheus,gcnonato/prometheus,Stackdriver/stackdriver-prometheus,cit-lab/prometheus,brancz/prometheus,abhishekamralkar/prometheus,Dieterbe/prometheus,tomwilkie/prometheus,kzittritsch/prometheus,Gouthamve/prometheus,adamron1/prometheus,dln/prometheus,datajet-io/prometheus,JavierZunzunegui/prometheus,dpatel06/prometheus,wrouesnel/prometheus,sudhi-vm/prometheus,alileza/prometheus,nicr9/prometheus,slok/prometheus,tattsun/prometheus,GoogleCloudPlatform/prometheus,prometheus/prometheus,RobertKielty/prometheus,robbiet480/prometheus,gottwald/prometheus,RobertKielty/prometheus,jimmidyson/prometheus,yanghongkjxy/prometheus,Gouthamve/prometheus,prometheus/prometheus,Conorbro/prometheus,fabric8io/prometheus,ton31337/prometheus,laushinka/prometheus,wxdublin/prometheus,tomwilkie/prometheus,GoogleCloudPlatform/prometheus,AlekSi/prometheus,fabric8io/prometheus,q3k/prometheus,fabxc/prometheus,mrwacky42/prometheus,gesellix/prometheus,gottwald/prometheus,brancz/prometheus,keegancsmith/prometheus,PrFalken/prometheus,msiebuhr/prometheus,mrwacky42/prometheus,thachmai/prometheus,eliothedeman/prometheus,brian-brazil/prometheus,Conorbro/prometheus,justintung/prometheus,trigrass2/prometheus,bluecmd/prometheus,dpatel06/prometheus,q3k/prometheus,jbdalido/prometheus,msiebuhr/prometheus,dsymonds/prometheus,q3k/prometheus,keegancsmith/prometheus,Conorbro/prometheus,dln/prometheus,RobertKielty/prometheus,prasincs/prometheus,msiebuhr/prometheus