Add configuration for memory size and disk size

[adulau]

Add configuration for memory size and disk size as some users might use it for production images.

[cedricbonhomme]

Passing arguments to vagrant is always a little tricky.

A simple solution is to use an environment variable which will be used in the bootstrap.sh script.
Or maybe you would simply prefer a variable at the top of the bootstrap.sh script?

[cedricbonhomme]

I may have found an elegant solution,the CustomFile: https://github.com/Varying-Vagrant-Vagrants/VVV/wiki/Customising-your-Vagrant's-attributes-and-parameters
You change the file, then just type vagrant reload to update the VM settings.