809c44e set default qcow2 VM to use 2G of RAM

Authored and Committed by bgoncalv 5 years ago
    set default qcow2 VM to use 2G of RAM
    
    Booting up a VM with 1G of RAM is not enough to run many tests, it would be better if we could boot by default the VM using 2G
    as more tests will be able to run without problems by default.