servers: Upgraded JUnit binary from 4.3.1 to 4.11 and updated all references.
servers: MetadataCacheTest: Fixed errors after upgrade to JUnit 4.11.
servers: OSD Webserver: Increased time to wait for a blocked port to 180 seconds. Improved error message which shows the port in use now.
servers: ReplicationTest: Let each test print its name at the beginning to further debug the "Address already in use" problem.
servers: Added missing JUnit dependency hamcrest-core-1.3.jar.