CSP.LMC Common Package: set as R/W the CspSubarray xxxDelayExpected attributes.

Set a default value for configurationDelayExpected.
CSP_Mid.LMC: add progress counter attributes for Add/RemoveReceptors command.
Removed a bug in _validate_scan_configuration method.
Added tests to configure two subarrys and updated docker-compose files and
TANGO DB to use two CSP>LMC sub-arrays.