JBIDE-16834 - Build failures on org.jboss.tools.ws.jaxrs.ui.test

Fixing build failures on org.jboss.tools.ws.jaxrs.ui.test because of missing dependency org.eclipse.jdt.launch
This caused the sample project in the runtime workspace to *not* have a JRE to be compiled, which prevented the
project build and the JAX-RS Metamodel build.