Convert softwareImage properties such as 'min_disk', 'min_ram' and
'size' to bytes before storing it to 'vnf_software_images' db table.
Since the size in bytes will be a large number, the type of
'min_disk' and 'min_ram' columns of 'vnf_software_images' tables has
been changed to BigInt.
Closes-Bug: #1879436
Co-Authored-By: Prashant Bhole <prash.bhole@gmail.com>
Change-Id: I3bf839783863f84f507d9b15c6eab6250d9f5d30
01cf3efd4c