Replaced remaining auto_ptr objects with unique_ptr objects

middletier/sharedtest/MiddleTierAbstractTest.hpp

nameserver/MockNameServerFactory.cpp

nameserver/MockNameServerFactory.hpp

nameserver/MockNameServerTest.cpp

nameserver/NameServerFactory.hpp

objectstore/BackendRados.cpp

objectstore/BackendVFS.cpp

objectstore/ObjectOps.hpp

objectstore/RootEntry.cpp

scheduler/MockSchedulerDatabaseFactory.cpp

scheduler/MockSchedulerDatabaseFactory.hpp

scheduler/SchedulerDatabaseFactory.hpp

scheduler/SchedulerTest.cpp