Add causeOfDeathNonCoded as the updatable Property in REST

Expectation Behaviour:

When we use the free text property namely causeofDeathNonCoded to mark the patient deceased, we should be able to mark him deceased.

Observed Behaviour:

An internal server error comes up which is because the causeofDeathNonCoded is not defined as an updatable property in DelegatingResourceDescription.

Solution:

We need to add the causeOfDeathNonCoded as an updatable property in DelegatingResourceDescription

Resource Links:

1. Code to be added - https://pastebin.com/xe5Hq831

2. Talks thread - https://talk.openmrs.org/t/error-while-marking-patient-deceased/28826/32

3. Sample JSON - https://pastebin.com/qEX7p7x4