comment out the proxy
remove unused template
remove unused template
Bootstrap
* Default to m1.xlarge
* 4 x MFS disks

Install
* move security steps to their own playbook
* add proxy support for tools that respect http_proxy env variable
* do less pausing when CLDB has not just recently been brought up
* clean up copied security-related files after install
* centralize client configuration with node configuration
* bring back v3 support (for upgrade testing)
* clean up nfs playbook, don't print all that red stuff

Tasktracker
* was installing nodemanager erroneously, fixed

test_cluster
* was sometimes only creating 100MB of data, hopefully fixed now to create 100 x 1GB files