Add debug logging on connection refused to show the URL that failed
Add debug logging on connection refused to show the URL that failed

epu/epu-cb-jenkins,rapid7-cookbooks/jenkins,team-lab/chef-jenkins,Tiger66639/jenkins,autoclone/jenkins,martinb3-cookbooks/jenkins,daften/cookbook-jenkins,dshvedchenko/jenkins,RobertNorthard/jenkins,gshively11/jenkins,bhalothia/jenkins,ttab/jenkins,mknapik/jenkins,chef-cookbooks/jenkins,isbaran/jenkins,b-dean/jenkins,epu/epu-cb-jenkins,asmarre/jenkins,rberger/jenkins,Piousbox-cookbooks/jenkins,gshively11/jenkins,streeter/jenkins,ebsco/jenkins,j-c-h-e-n-g/jenkins,hirocaster/jenkins-1,mknapik/jenkins,bhalothia/jenkins,mknapik/jenkins,rexut/opscode-cookbooks-jenkins,StephenKing/chef-cookbook-jenkins,developerinlondon/jenkins,Sauraus/jenkins,mlongob/jenkins,opscode-cookbooks/jenkins,cru-Luis-Rodriguez/jenkins,b-dean/jenkins,rexut/opscode-cookbooks-jenkins,rchekaluk/jenkins,rafaelmagu/jenkins,jaredrussell/jenkins,wanelo-chef/jenkins,autoclone/iptables,samdunne/jenkins,chef-cookbooks/jenkins,rexut/opscode-cookbooks-jenkins,mlongob/jenkins,cru-Luis-Rodriguez/jenkins,jhsubscribe/chef-jenkins,autoclone/jenkins-cookbook,autoclone/iptables,umar85/jenkins,smedefind/jenkins,samdunne/jenkins,Dispader/jenkins,opscode-cookbooks/jenkins,ebsco/jenkins,epu/epu-cb-jenkins,StephenKing/chef-cookbook-jenkins,alex-slynko-wonga/jenkins,mattjalexander/jenkins,ryandub/jenkins,rkolless/jenkins,j-c-h-e-n-g/jenkins,gshively11/jenkins,autoclone/jenkins-cookbook,Piousbox-cookbooks/jenkins,opscode-cookbooks/jenkins,locke105/jenkins,Dispader/jenkins,Tiger66639/jenkins,autoclone/jenkins,rchekaluk/jenkins,umar85/jenkins,jcuzens/jenkins,cru-Luis-Rodriguez/jenkins,Da-Wei/jenkins,RobertNorthard/jenkins,umar85/jenkins,Dispader/jenkins,blt04/chef-jenkins,juliandunn/jenkins,martinb3-cookbooks/jenkins,StephenKing/chef-cookbook-jenkins,dshvedchenko/jenkins,mlongob/jenkins,Sauraus/jenkins,DataDog/jenkins,b-dean/jenkins,RobertNorthard/jenkins,rchekaluk/jenkins,chef-cookbooks/jenkins,rapid7-cookbooks/jenkins,rapid7-cookbooks/jenkins,Tiger66639/jenkins,DanielRedOak/jenkins,samdunne/jenkins,autoclone/iptables,Sauraus/jenkins,j-c-h-e-n-g/jenkins,martinb3-cookbooks/jenkins,daften/cookbook-jenkins,autoclone/jenkins-cookbook,autoclone/jenkins,juliandunn/jenkins,erikthorselius/jenkins,juliandunn/jenkins,dshvedchenko/jenkins,developerinlondon/jenkins,thrucker/jenkins,ebsco/jenkins,developerinlondon/jenkins,SinisterLight/jenkins,Piousbox-cookbooks/jenkins,bhalothia/jenkins,dekokun/jenkins,daften/cookbook-jenkins