JBIDE-18053: Added powermock osgi

mirror contains bundles that already presented in other mirrors under sownload.jboss.org requirements folder. Examples:
- servlet bundle the same as in eclipse luna release;
- org.junit_4.11.0.jar but luna release has org.junit_4.11.0.v201303080030.jar

what we going to get in unified target in case of different versions? Only highest or both?