Cherry-pick MR !366 to master branch
Switch to the new nominal Run 2 tuning (Summer2017Optimisation_v4_Run2) as the default tuning.
See merge request !366 (merged)
(cherry picked from commit 147aff33)
e099f45e Switch to the new nominal Run 2 tuning (Summer2017Optimisation_v4_Run2) as the default tuning.