TRUNK-6260: Add Commons Collections 4 to the provided set of libraries

[agrpranjal07]

Issue I worked on

see TRUNK-6260: Add Commons Collections 4 to the provided set of libraries

Description of what I changed

I had changed Commons Collection package to version 4 in all the file Changed api/src/main/java/org/openmrs/api/db/hibernate/HibernateConceptDAO.java to make it compatible with version 4.

Checklist: I completed these to help reviewers :)

• [x] 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)

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

• [x] All new and existing tests passed.

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

[agrpranjal07]

@mherman22 I have gone through the docs but unable to understand what specific change you are pointing to. It would be great if you can be more descriptive.