Migration of Geant4 branches to Geant4 11.0.6

[civanch]

Geant4 11.1beta release is available. In order to validate it and perform R&D efforts for CMS simulation it is needed to create a new geant4 version (better to call it 11.0.6 == geant4-11-00-ref-06) and use this version of Geant4 inside GEANT4 and G4VECGEOM branches.

beta release is available via https://geant4.web.cern.ch/support/download_beta

[cmsbuild]

A new Issue was created by @civanch Vladimir Ivantchenko.

@Dr15Jones, @perrotta, @dpiparo, @makortel, @smuzaffar, @qliphy can you please review it and eventually sign/assign? Thanks.

cms-bot commands are listed here

[civanch]

@iarspider , please, take care.

[iarspider]

Done with cms-sw/cmsdist#7970 and cms-sw/cmsdist#7971