Backend function for file storage space reporting
This adds functionality to retrieve disk space informationfor file storage. It calls the 'df' tool and parses itsoutput to extract the total and free amount of disk spaceon the disk where the given path is located....
Move 'container.py' to storage directory
Moving 'container.py' to the storage directory.
Signed-off-by: Helga Velroyen <helgav@google.com>Reviewed-by: Thomas Thrainer <thomasth@google.com>
Rename dir 'block' to 'storage'
Renaming the 'block' directory to 'storage', because I plan toplace code there that is related to file storage and leavingit named 'block' would be misleading.