TRUNK-6202 Replace Hibernate Criteria API with JPA for HibernateHL7DAO

[k4pran]

Description of what I changed

This task is to migrate the deprecated hibernate criteria to jpa criteria for the HibernateHL7DAO class. There was a lot of test coverage missing in this class that I have not added yet. It didn't seem to follow the same pattern as the other DAOs where there is an xml set up to initialize mocks in the database. If we need to cover these missing tests before merging I may need some guidance on this.

Issue I worked on

see https://issues.openmrs.org/browse/TRUNK-6202

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

[dkayiwa]

@k4pran improving the test coverage would be great. But it is fine if you do not have the time to do it. The functionality of this class is no longer used as much as in the old days. It was heavily used by the now deprecated FormEntry module: https://wiki.openmrs.org/display/docs/formentry+module