Neutron shield for Fiber Tracker in default geometry of upgrade in Gauss configurable and latest tags

Port merging of branch 'LHCBGAUSS-1219.FT-NeutronShield' into master (See merge request !192 (merged))

Also include changes to use latest database tags in example options (See merge request !188 (merged) + change of DDDB tag)

The new dbase tags are only compatible with LHCb > v42r4 and are:

• dddb-20171010
• Particle Property Table update in 2017 (LHCBUCNDB-82)
• VP geometry update Plan A for cooling and support structures (LHCBUCNDB-81)
• FT Geometry Mod from EDMS 1792415 and avoid Rich2 Overlap (LHCBUCNDB-80)
• FT Neutron shield (LHCBUCNDB-70)
• sim-20170301-vc-md100
• Field Map from Magnetic Field Measurements in 2014 (LHCBUCNDB-79)
• FT conditions major update along with Geometry version v61 (LHCBUCNDB-77)