Fix script argument parsing.

The vm_vdi_cleaner.py script's argument parsing was broken and unloved.

Change-Id: I1662534d65fd0e8472e092ed9f10d6cc059f1cab
Imported Translations from Transifex

Change-Id: I1016d574022230b3fdfd6ae580a657aeb45bb1a0
Merge "Imported Translations from Transifex"
Merge "Fix script argument parsing."