DMN: Call a DMN with Date when deployed to KIE Server

[hmatt1]

When calling a DMN from Java code, we can pass in a Date or DateTime object and it will convert to a DMN Date type to be used in the decision making.

It would be really nice if properly formatted Strings would also be supported to convert to a Date type. With the current implementation, we haven't figured out how to call a DMN deployed to KIE Server with a Date type as input. If you pass a string, it errors, and we can't send the Date type of object in the JSON body in the request.

We will need to explore this behavior more, and create a well documented example of the current behavior and what we can't do with it in regards to dates.