Change ${hapi-fhir-core.version} -> ${hapi-fhir-core-version}; sync-properties-maven-plugin in camel does not seem to deal with properties with a "." in them

Change ${hapi-fhir-core.version} -> ${hapi-fhir-core-version}; sync-properties-maven-plugin in camel does not seem to deal with properties with a "." in them #392