Missing documentation to switch Cybersource from Sandbox to Production

[diegoag64]

Documentation is missing a very important config value to switch Cybersource from sandbox to production.

The config key is the following: flex_run_environment For Sandbox this is as default set to 'cybersource.environment.sandbox', and to switch to production this has to be changed set in the config to 'cybersource.environment.production'

I tested this since I am about to push my website to production and just got approved by Cybersource to use a live account, but it kept not working because this is not specified in the docs which was odd for me in the first place.

So I propose we change this:

cybersource:
    merchant_id: SET-ME-PLEASE 
    flex_shared_secret_key_id: SET-ME-PLEASE
    flex_shared_secret_key: SET-ME-PLEASE
    soap_api_url: https://ics2wstest.ic3.com/commerce/1.x/transactionProcessor/CyberSourceTransaction_1.140.wsdl
    transaction_key: SET-ME-PLEASE
paypal:
    cancel_checkout_path: /checkout/cancel-checkout/
    client_id: SET-ME-PLEASE
    client_secret: SET-ME-PLEASE
    error_url: /checkout/error/
    mode: sandbox
    receipt_url: /checkout/receipt/

To this:

cybersource:
    merchant_id: SET-ME-PLEASE 
    flex_shared_secret_key_id: SET-ME-PLEASE
    flex_shared_secret_key: SET-ME-PLEASE
    soap_api_url: https://ics2wstest.ic3.com/commerce/1.x/transactionProcessor/CyberSourceTransaction_1.140.wsdl
    transaction_key: SET-ME-PLEASE
    flex_run_environment: [set as 'cybersource.environment.sandbox' as default, change to 'cybersource.environment.production' for use in production]
paypal:
    cancel_checkout_path: /checkout/cancel-checkout/
    client_id: SET-ME-PLEASE
    client_secret: SET-ME-PLEASE
    error_url: /checkout/error/
    mode: sandbox
    receipt_url: /checkout/receipt/```

[regisb]

Thanks for your feedback @diegoag64. I agree that we should make the changes to the default configuration and the docs. Would you like to open a pull request? If not I'll take care of it and ask for your review.

[diegoag64]

@regisb You can go ahead and do the PR and I can review it so you can take care of the wording in the docs! Thanks!