API 2.0: Release Vehicle required fields

Issue Summary

When creating an RV using API 2.0, users can't easily figure out the right status and health because there is a logic behind the health field and it's dependent on the selected state.

Steps to Reproduce

1. Create an RV via API and set the necessary required fields. Purposely set the status to 1 and health to 3.
2. Observe the result

Expected Results

To help reduce this error, status and health should not be required via API and should have a default value like when we create it in the GUI.

Actual Results

Cannot create Release Vehicle. Value for health is invalid.

Workaround

Users have to be aware of the following combination when creating RV via API

            Status:
             * 1 = planning     - health:2,4,5
             * 2 = in progress  - health:2,3,4,5
             * 3 = launched     - health:2,3,4,5
             * 4 = closed       - health:1
             * 5 = canceled     - health:1
             * 6 = archived     - health:1

             Health:
             * 1 = Complete
             * 2 = At Risk
             * 3 = Critical / Slip
             * 4 = On Track
             * 5 = On Hold