Michael Marineau de9ff4fc8e fix(disk_util): Rework how argument parsing/passing works.
Move from optparse to argparse. Move layout file and layout type to
global options with reasonable default values so every command doesn't
need to them. Adjust calling scripts to match.

For now layout type is being passed via an environment variable
DISK_LAYOUT_TYPE but this is a temporary situation.
2013-12-30 16:10:46 -08:00
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