SPHERE-1212 add new commands on Customer

3 new commands to update the customer.
- setCompanyName
- setVatId
- setDateOfBirth

For the last command I had to add a new Jackson serializer for the LocalDate type.
We do not need it currently but if we would, we would most probably want to create them with one request. For example for each customer registration we would always need to trigger 2 API calls.