Make the new DaVinci working with ProdConf
Adding a new DaVinci Configurable to make ProdConf able to run the new DaVinci configuration. See related issues: lhcb-datapkg/ProdConf#5 (closed), https://gitlab.cern.ch/lhcb-dpa/project/-/issues/132. In addition, some small changes are applied in a few scripts in order to increase the DaVinci flexibility when run without a specific input database.
This MR doesn't require any change in ProdConf since the new Configurable is built in such a way to match the structure expected by ProdConf. Two option files are created to run locally ProdConf using the following command:
xenv --xml ProdConf/ProdConf.xenv ./run gaudirun.py Phys/DaVinci/options/options-DaVinciConf.py Phys/DaVinci/options/options-ProdConf.py
options-DaVinciConf.py is used to set the options required to run the DaVinci job, while options-ProdConf.py set the options that have to be propagated by ProdConf itself.
A further dedicated test is added to check the correct configuration when running the job with the DaVinci Configurable. The file Phys/DaVinci/options/options-ProdConf.py is a prototype for a possible option file to be run in ProdConf.