RESTWS-677: Failure to change preferred name, or identifier using a POST request to the REST API

[IamMujuziMoses]

Issue I worked on

see https://issues.openmrs.org/browse/RESTWS-677

Checklist: I completed these to help reviewers :)

• My IDE is configured to follow the code style of this project.

  No? Unsure? -> configure your IDE, format the code and add the changes with git add . && git commit --amend

• I have added tests to cover my changes. (If you refactored
  existing code that was well tested you do not have to add tests)

  No? -> write tests and add them to this commit git add . && git commit --amend

• I ran mvn clean package right before creating this pull request and
  added all formatting changes to my commit.

  No? -> execute above command

• All new and existing tests passed.

  No? -> figure out why and add the fix to your commit. It is your responsibility to make sure your code works.

• My pull request is based on the latest changes of the master branch.

  No? Unsure? -> execute command git pull --rebase upstream master

ScreenShots

PatientIdentifier from postman

Patient.Identifier.mp4

PersonName from postman

Person.Name.mp4

[IamMujuziMoses]

@djazayeri @ibacher @dkayiwa could you please review this PR, your feedback will be appreciated.

[IamMujuziMoses]

You can’t change preferred to false, only to true, and only if personName, personAddress or patientIdentifier items are more than one. For instance if you have more than two items and you change the true one to false, picking randomly the one to update to true isn't ideal.