This has been diagnosed as a failure to have the following packages in bigdata-client.jar. These packages are bundled by the top-level build.xml "bigdata-client" ant target. But the maven artifact generation for the bigdata-client module is not able to do this. Therefore any code that executes createRepository() using bigdata-client in the maven build system will fail.
@bradbebee suggests that those source files might somehow not be included within the top-level project maven generated jar. If true, that would explain why the code is not succeeding by resolving them in that jar instead of (or in addition to) the bigdata-client jar.