Bump OCL version from 1.2.9 to 2.4.0

[alaboso]

Description of what I changed

1. Updated pom.xml openconceptlabVersion from 1.2.9. to 2.4.0
2. Updated api/src/test/resources/testAppDataDir/configuration/ocl/test.zip - New version from OCL with self-mappings added in OCL by OCL itself instead of by the openmrs-module-openconceptlab
3. Updated OpenmrsProfile in OpenConceptLabLoader
4. OpenConceptLabLoaderIntegrationTest concept names which have since been updated in OCL. (uppercase to lowercase and other concept names added/removed)
5. Updated openconceptlab module version in DomainBaseModuleContextSensitiveTest

Issue I worked on

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.

  Ran: mvn --batch-mode --update-snapshots clean package -P validator

  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

[Ruhanga]

Thanks @alaboso. Generally LGTM. I have one little concern to address below.