More descriptive variable names

[szepeviktor]

            "license_var": "PRODUCT_LICENSE",
            "url_var": "PRODUCT_ACTIVATION_URL"

Could we rename these two?

[szepeviktor]

@ajitbohra adding _var would show that it is not a value but a variable name.
Please.

[ajitbohra]

sounds good we can rename for more clarity and also support the existing one for backward compatibility.