Automatically add some helpful platform-related labels to slaves
Automatically add some helpful platform-related labels to slaves

Most Jenkins matrix configurations key off this platform data so let's 
include it by default!
Tiger66639/jenkins,gcymbalski/jenkins,ryandub/jenkins,RobertNorthard/jenkins,RSO/jenkins,autoclone/iptables,streamlinesocial/jenkins,autoclone/jenkins-cookbook,team-lab/chef-jenkins,locke105/jenkins,timops/jenkins,SinisterLight/jenkins,developerinlondon/jenkins,mknapik/jenkins,smedefind/jenkins,umar85/jenkins,DanielRedOak/jenkins,autoclone/jenkins-cookbook,developerinlondon/jenkins,bhalothia/jenkins,umar85/jenkins,siteshwar/jenkins,rkolless/jenkins,cburyta/jenkins,erikthorselius/jenkins,kisoku/jenkins,Piousbox-cookbooks/jenkins,chef-cookbooks/jenkins,Youscribe/jenkins-cookbook,rexut/opscode-cookbooks-jenkins,gshively11/jenkins,autoclone/iptables,opscode-cookbooks/jenkins,umar85/jenkins,juliandunn/jenkins,dshvedchenko/jenkins,kippandrew/jenkins,uspeak/chef-jenkins,switchgears/jenkins,JeanMertz/jenkins-1,duro/jenkins,samdunne/jenkins,StephenKing/chef-cookbook-jenkins,b-dean/jenkins,martinb3-cookbooks/jenkins,ktc-itsnotbutter/jenkins,epu/epu-cb-jenkins,simplymeasured/opscode-cookbooks-jenkins,jbrehm/jenkins,alex-slynko-wonga/jenkins,StephenKing/chef-cookbook-jenkins,Dispader/jenkins,j-c-h-e-n-g/jenkins,isbaran/jenkins,DataDog/jenkins,martinb3-cookbooks/jenkins,daften/cookbook-jenkins,Dispader/jenkins,Afterglow/jenkins,mknapik/jenkins,mattjalexander/jenkins,Dispader/jenkins,developerinlondon/jenkins,gshively11/jenkins,mlongob/jenkins,opscode-cookbooks/jenkins,cru-Luis-Rodriguez/jenkins,bhalothia/jenkins,crittercism/jenkins,rexut/opscode-cookbooks-jenkins,StephenKing/chef-cookbook-jenkins,opscode-cookbooks/jenkins,chef-cookbooks/jenkins,schisamo/jenkins,rafaelmagu/jenkins,Tiger66639/jenkins,suchitpuri/jenkins,Piousbox-cookbooks/jenkins,rapid7-cookbooks/jenkins,j-c-h-e-n-g/jenkins,autoclone/jenkins,streeter/jenkins,grigarr/jenkins,priestjim/jenkins,Sauraus/jenkins,autoclone/jenkins,samdunne/jenkins,blackboard/jenkins,mlongob/jenkins,ebsco/jenkins,Piousbox-cookbooks/jenkins,jaredrussell/jenkins,autoclone/iptables,rchekaluk/jenkins,cru-Luis-Rodriguez/jenkins,epu/epu-cb-jenkins,Sauraus/jenkins,martinb3-cookbooks/jenkins,autoclone/jenkins-cookbook,autoclone/jenkins,wanelo-chef/jenkins,juliandunn/jenkins,rberger/jenkins,rapid7-cookbooks/jenkins,krobertson/jenkins-cookbook,asmarre/jenkins,RobertNorthard/jenkins,dshvedchenko/jenkins,bencaron/jenkins,j-c-h-e-n-g/jenkins,mknapik/jenkins,dekokun/jenkins,ttab/jenkins,samdunne/jenkins,Sauraus/jenkins,ebsco/jenkins,daften/cookbook-jenkins,dshvedchenko/jenkins,rexut/opscode-cookbooks-jenkins,jcuzens/jenkins,juliandunn/jenkins,AmoebaLabs/chef-jenkins,pierreozoux/jenkins,chef-cookbooks/jenkins,eklein/jenkins,cru-Luis-Rodriguez/jenkins,someara/jenkins-cookbook,bhalothia/jenkins,ndobson/jenkins,mlongob/jenkins,rchekaluk/jenkins,rapid7-cookbooks/jenkins,Tiger66639/jenkins,hirocaster/jenkins-1,RobertNorthard/jenkins,daften/cookbook-jenkins,mdlavin/jenkins,epu/epu-cb-jenkins,rchekaluk/jenkins,b-dean/jenkins,ebsco/jenkins,blt04/chef-jenkins,gshively11/jenkins,jhsubscribe/chef-jenkins,thrucker/jenkins,rberrelleza/jenkins,irccloud/jenkins,b-dean/jenkins,richleland/jenkins,m1lth14d3s/jenkins,Da-Wei/jenkins