Revert "remove obsolete code and locks from mtmap/vmss system v0.3."

This reverts commit 37d3e607a9228a2cac2f40bf69b0bbb15a4b4fec.
remove obsolete code and locks from mtmap/vmss system v0.4.
- re-add freeze VMSS operation on current code base (check config settings for avoid false-freeze!).
- use internal semaphore to synch condition broadcast
- more correct calculation workedThreads
- move LoadBalancer to MapUpdater class (cosmetic)
- add verose logging to ObjectUpdateTaskBase errors
need testing with disabled freeze detection