Otherwise we run into a deadlock or random crashes

Follow-up fix for 32d3728c

It seems that setting up zmq might take longer than expected. Add
additional delay and move initial write after subscription to make sure
we really receive the inital event

The change in test application causes FROM_DEVICE values to be written
only if the TO_DEVICE variables are modified.

It basically decorated the AutoPropertyDescription with the type which
is now in AutpPropertyDescription

Helps debugging a bit

Bubble up the type to the parent class

change type of macro pulse number PV to int64_t (as this is the data type expected by DOOCS) and convert if necessary via the TypeChangingDecorator

- added missing lock guard
- added missing reset of dataReceived flag

so far, only scalars work and the meta data (macro pulse number etc. is missing)

- fixed last tests which were not using timeout based checks

introduced flag to indicate when doocs initialisation is done. Removed all sleeps in the server based tests.