The args agument was only used to find the symbol for the getval
command. Have the command pass the symbol to find in directly. We
can therefore remove the args paramater to the BlockDevice() creation.
Change-Id: I8e357131b70a00e4a2c4792c009f6058d1d5ae9e
Move argument parsing to subparsers, rather than positional arguments.
This better reflects the tool's role as a driver and allows
sub-commands to deal with arguments in a natural way.
Change-Id: Iae8c368e0f3fe47abfddb9e0a1558bd5b3423aee
This creates a BlockDeviceCmd object to hold the main() function.
This doesn't really do anything different right now, but sets a base
for using argparse subparsers to handle the command-line
Change-Id: I4acf95ff4d554a3b4e7e2244ab1706631b98458f
This moves the YAML parameter parsing into the command-line driver.
It makes the argument optional so it can be taken from the environment
variable directly. The parsed YAML is passed to the BlockDevice
object.
Change-Id: I6fa5e5b7d1fccfc7cf47d6e4a1fa6e560734680d
