New tuning for Pythia8 for Sim10

The new tuning with the color reconnection model for Sim10 has been prepared by Marco Adinolfi (@adinolfi) and Mick Mulder (@mmulder).
Tuning options and their performance against Sim09 Tune0 tuning can be found in @adinolfi presentation at the Simulation Meeting of 18 Sep 2018.

• Lambda0, the one set as default in LHCbDefault.cmd, although not the best of the three seems the best compromise.
• Lambda2, available via Pythia8_Lambda2.py seems the best but significantly underestimate the phi cross section.

We should make some generator productions for @adinolfi to cross check the two tuning at different CM energies for

• Min bias
• Inclusive b
• Inclusive c
  so that the various multiplicity checks can be verified.
  This will also allow to cross check that Pythia8_Lambda2.py and `Pythia8_7TeV.py can be used together. @adinolfi ?

Finally we should produce min bias MDF samples with different nu for Beat to cross check the agreement of detectors multiplicities and fully reconstructed samples for 2016 (probably the best year) for the TAV WG with both tunes.