Put release-deploy-afs in cms-bot and add PROD_ARCH to config.map

Yesterday when I installed CMSSW_7_3_pre3, we noticed that the production architecture was hard coded in Jenkins to be slc6_amd64_gcc481.
I added the script to cms-bot, and modified it to read config.map to get the production architecture. To do this, I also added a new property to config.map: PROD_ARCH.