The start of a script to convert lmc "batch" specifications to the CSV

The start of a script to convert lmc "batch" specifications to the CSV
format used by the lustre_config.sh script to configure lustre.
The number of lmc options the script understands currently seems to cover
ltest's lmc batch generation.
This is the "cheap way" to get ltest to do mountconf and be able to do full
testing on b1_5 and has the added benefit of testing the lustre_config.sh
scripts while it's at it.
Note, that arguably we should be parsing the XML, not lmc batch commands.
Fortunately the way the script works, changing out parsing of lmc commands
for parsing XML is easy to do and will still work with the backend CSV
generation.