[FIX] calendar: recurring event around DST

Be in timezone Europe/Brussels, where, in 2018, the DST switch
happens on 2018-10-28.

Create a recurring event starting on 2018-10-27 until 2018-10-29
at say, 8am

For the days before the 28, the time of the event will be correct

Before this commit though, for the days after the 28,
the meeting time will be shifted by one hour
This is because the rrule took a TZ aware datetime, and generated recurring
event dates with that same TZ, i.e. the one in STD time

After, this commit, all the meetings are well scheduled at 8am,

OPW 1895315

closes odoo/odoo#27985

0 files changed, 0 insertions, 0 deletions