VeloClusterTracking version for alignement

Depends on LHCb!3447 (merged) and !2772 (merged)

Default Velo tracking:

13_velo_overlap       :    4124 from     4194 [ 98.33 %]    141 clones [ 3.31 %], purity: 99.76 %, hitEff: 87.20 %, hitEffFirst3: 90.17 %, hitEffLast: 86.06 %
14_velo_crossing_side :    3673 from     3788 [ 96.96 %]    123 clones [ 3.24 %], purity: 99.85 %, hitEff: 86.77 %, hitEffFirst3: 77.61 %, hitEffLast: 91.32 %

Full Velo tracking (master version, allows tracks to cross side):

13_velo_overlap       :    4124 from     4194 [ 98.33 %]    179 clones [ 4.16 %], purity: 99.73 %, hitEff: 87.24 %, hitEffFirst3: 91.01 %, hitEffLast: 85.84 %
14_velo_crossing_side :    3733 from     3788 [ 98.55 %]     95 clones [ 2.48 %], purity: 99.77 %, hitEff: 96.41 %, hitEffFirst3: 96.60 %, hitEffLast: 96.25 %

Full Velo tracking (this MR, allows tracks to cross side and to have hits from overlapped sensors):

13_velo_overlap       :    4124 from     4194 [ 98.33 %]    180 clones [ 4.18 %], purity: 99.72 %, hitEff: 97.17 %, hitEffFirst3: 97.25 %, hitEffLast: 97.11 %
14_velo_crossing_side :    3733 from     3788 [ 98.55 %]     98 clones [ 2.56 %], purity: 99.77 %, hitEff: 96.69 %, hitEffFirst3: 96.60 %, hitEffLast: 96.65 %