Improves stability in cluster startup scripts.
Merge branch 'master' of https://github.com/heathkh/iwct.git
Fixes bug caused by IOError being raised.
Improves cli.
Only pause when building workstation amis to allow manual customization.
Fixes bug caused by residue host id file and disables starting mapr
services on boot before taking ami snapshot.
Changes default cluster name to iwct.
Moves code that can raise exceptions inside a try-block.
Refactors to remove dead code.
Changes template files.
Modifies the configure script from whirr and the playbook that calls it.
Updates to fix bugs in ami snapshot time + configure time interaction.
Removes unneeded #! in python module file.