More refactoring - rename classes etc
Merge branch 'coadmin' of https://github.com/voldemort/voldemort into coordinator_admin
Fix typos, copy paste error
Merge branch 'coadmin' of https://github.com/voldemort/voldemort into coordinator_admin
Fixed the test code in CoordinatorAdminRequestHandler so that it responds to requests.
Still just test code, not very advanced yet.