Add client service control tables, table_regex entries, and client_services.
Add client service control tables, table_regex entries, and client_services.

The entries in client_services are the services that Emulab allows users
and admins to apply hooks to, or to enable/disable.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome