business name substitution

(NOTE: I am not sure if this is a requirement, and perhaps instead of automatically update it in Google, we should flag it for review by our support team.)

When a customer changes the business name, the ads persisted in the ContentModelService do not get updated with the new business name. We need to update sites and google campaigns (ads) when a customer changes the business name.

Brand Campaign uses the business name in the headline. If the business name changes (in the self serve ui or in the optus deploy), we would want to update the business name in the brand campaign ads (so landing pages match the ads).

Note: The business name initially comes in through Optus request, and we use that as the business name until the business name is customizedin the self serve UI. After that, we always use that so that's the only one we need to worry about changing.