Use atomic updates when downloading the slave JAR
Use atomic updates when downloading the slave JAR

On Windows, when slave.jar changes on the master, the 'slave_jar_resource'
remote_file will try to replace the file. This means we get

    Errno::EACCES: remote_file[C:\chef\cache/slave.jar] (dynamically defined) had an error: Errno::EACCES: Permission denied

error since the file is currently in use (java -jar slave.jar is running).
Setting atomic_update to false means we will just use cp, which works.

opscode-cookbooks/jenkins,Dispader/jenkins,autoclone/jenkins,cru-Luis-Rodriguez/jenkins,dshvedchenko/jenkins,umar85/jenkins,mlongob/jenkins,bhalothia/jenkins,cru-Luis-Rodriguez/jenkins,RobertNorthard/jenkins,chef-cookbooks/jenkins,chef-cookbooks/jenkins,juliandunn/jenkins,daften/cookbook-jenkins,Dispader/jenkins,bhalothia/jenkins,martinb3-cookbooks/jenkins,rchekaluk/jenkins,rchekaluk/jenkins,Tiger66639/jenkins,Piousbox-cookbooks/jenkins,Piousbox-cookbooks/jenkins,cru-Luis-Rodriguez/jenkins,autoclone/iptables,StephenKing/chef-cookbook-jenkins,umar85/jenkins,chef-cookbooks/jenkins,mknapik/jenkins,b-dean/jenkins,j-c-h-e-n-g/jenkins,epu/epu-cb-jenkins,ebsco/jenkins,Dispader/jenkins,autoclone/jenkins-cookbook,daften/cookbook-jenkins,daften/cookbook-jenkins,ebsco/jenkins,Sauraus/jenkins,gshively11/jenkins,Tiger66639/jenkins,mlongob/jenkins,rchekaluk/jenkins,dshvedchenko/jenkins,rexut/opscode-cookbooks-jenkins,RobertNorthard/jenkins,samdunne/jenkins,StephenKing/chef-cookbook-jenkins,samdunne/jenkins,b-dean/jenkins,autoclone/jenkins,autoclone/iptables,autoclone/jenkins,b-dean/jenkins,j-c-h-e-n-g/jenkins,epu/epu-cb-jenkins,gshively11/jenkins,rexut/opscode-cookbooks-jenkins,DataDog/jenkins,bhalothia/jenkins,StephenKing/chef-cookbook-jenkins,mknapik/jenkins,RobertNorthard/jenkins,rexut/opscode-cookbooks-jenkins,opscode-cookbooks/jenkins,Piousbox-cookbooks/jenkins,Sauraus/jenkins,developerinlondon/jenkins,juliandunn/jenkins,martinb3-cookbooks/jenkins,juliandunn/jenkins,autoclone/iptables,gshively11/jenkins,martinb3-cookbooks/jenkins,developerinlondon/jenkins,ebsco/jenkins,autoclone/jenkins-cookbook,samdunne/jenkins,opscode-cookbooks/jenkins,dshvedchenko/jenkins,umar85/jenkins,Sauraus/jenkins,mknapik/jenkins,mlongob/jenkins,j-c-h-e-n-g/jenkins,Tiger66639/jenkins,autoclone/jenkins-cookbook,epu/epu-cb-jenkins,developerinlondon/jenkins