re-organize vars passed to the launch_isc_ec2 role
specify a volume size of 50 GB as per installation instructions
parameterize the name tag so we can easily pass that in from a calling context like a playbook or the command line
monolith playbook for provisioning and prepping an ec2 instance
set up a role for prepping a fresh instance to have edx installed
better final output
make our own sandbox script so we can interpolate roles we require for customization