Harvested the MPs and CPs with
uals opc.tcp://dop08.astron.nl:50000 -p "0:Objects"

This allows to specify only
    tools/ConfigDb/update_ConfigDb.sh tools/ConfigDb/LOFAR_ConfigDb.json
instead of
    tools/ConfigDb/update_ConfigDb.sh /hosthome/workspace/git/LOFAR2.0/tango/tools/ConfigDb/LOFAR_ConfigDb.json

The names are now
MP_NAME_R
CP_NAME_RW
This makes it clear what an MP and what a CP is.

Mixed case attribute names are something that Tango apparently
cannot deal with.

Also added the default ConbfigDb to serve as a clean start point.

- State machine checks for properties that get their values from the OPC server.
- Refactored attribute names to be all lower case.
- Got rid of the two functions that enable/disable data fetching in the data thread.

Still mostly templates.

Thanks, Python3, for still being a Pita.

Also remove all the locking that somehow blocked the entire Python program.

The attributes cannot be used before they get written to or otherwise
somehow magically updated.  Therefore I added peoprties with default
values that I assign in the init_device method.

The devices that run in this device server connect to OPC-UA servers
that provide crosslet station stats.