fix to manage /etc/hosts
Adding missing packages for INFRA-8099
fix to add jenkins group
add more dev libs
fix change the order of the roles, add update_configs tag , add new slaves to inventor - asf9[06:11]
add tag setup_master_key
be generic
add libcurl
Install RVM
disable autolibs...

...  since jenkins user has no sudo access (I guess), thus rvm should not automatically try to install missing packages.