If possible, make "cluster name" the core arg required by eggo

[laserson]

Currently, most eggo commands require a region and CF stack name to function. This seems redundant. Instead, take a single unique name for a cluster, and use it for the CF stack name and the Director cluster name. Then have commands take the cluster name, and figure out which region you're in (is this possible?). Remember to make name configurable in aws.conf.

[laserson]

This will also ensure that the eggo command could manage multiple clusters.

[laserson]

This will also ensure that eggo would be more easily expanded to support other clouds, like GCE