[to-check] dalylight save time change

[nmingotti]

. TODO better title, more precise info
. Juan made modifications to the time management in Cuis on Nov-2021, now we use new primitives available from the VM
. It is important for log running Cuis images (read as: server side use) to be able to detect when the local time changed in the underlying operating system. For example, when the timezone changes from CET/CEST.

Experiment to do

• Prepare an expendable vm without NTP (we must set the clock to fantasy value)
• Set the time near to a date of automatic change, e.g. from CET to CEST
• Run Cuis
• Wait till the time change
• Check if Cuis can detect the timechange with the new primitives