TriggerMenu+DerivationFrameworkCore: py3 fixes
This fixes ATR-21776 which was suffering from py3 incompatibility in 3 places:
- pickle file opening in TriggerAPI has to be in binary mode (
'rb'
) - two files in DerivationFrameworkCore needed explicit conversion from
dict_items
tolist
Fixes the failure of the CI test RecoPHYSFormatTest_optional-test
unless there are some other issues downstream (the python configuration part worked for me locally)