Add HAPI libraries for HL7 v2.3 and v2.4 support

Our pacs integration module uses the HAPI library for works with HL7 v2.3.

We are upgrading from platform 1.10.x to 1.11.x and as part of the upgrade it looks like the version of the HAPI library included with the platform is upgraded, but only the associated libraries for HL7 v2.5 and v2.6 are included. 

We want to include the HAPI artifacts for v2.3 and v2.4 as well.  Assumedly this should be non-intrusive.

Relevant section of pom found here:

https://github.com/openmrs/openmrs-core/blob/master/pom.xml#L334