Draft: Massage initial-time test to exclude issue with geometry update in TTStationHitManager

This is an update of !504 (closed), see there for details.

As I posted on !504 (closed), the RegexpReplacers there seem not relevant any more. However, (because of a fix in LHCbTest, see LHCb!2410 (merged)) there are some newly exposed differences, shown below. Note that the (relative) differences are only slightly above the default sensitivity of 0.0001 (and for Muon ANN PID the differences are within the sensitivity).

from 2017magup (reference):

ChargedProtoANN...SUCCESS 1D histograms in directory "PROTO/ChargedProtoANNPIDMoni" : 18
 | ID                        |   Title                                       |    #    |     Mean   |    RMS     |  Skewness  |  Kurtosis  |
...
 | Downstream/KaonANN        | "Downstream Kaon ANN PID"                     |   1881  |   0.049025 | 0.09265    |     5.3458 |     39.196 |
 | Downstream/MuonANN        | "Downstream Muon ANN PID"                     |   1881  |  0.0098367 | 0.069296   |     9.7031 |     109.81 |
 | Downstream/PionANN        | "Downstream Pion ANN PID"                     |   1881  |    0.46402 | 0.31551    |     0.2533 |    -1.3126 |

from initial-time:

 | Downstream/KaonANN        | "Downstream Kaon ANN PID"                     |   1881  |   0.049026 | 0.092652   |     5.3453 |     39.191 |
 | Downstream/MuonANN        | "Downstream Muon ANN PID"                     |   1881  |   0.009837 | 0.069297   |     9.7027 |      109.8 |
 | Downstream/PionANN        | "Downstream Pion ANN PID"                     |   1881  |    0.46402 | 0.31551    |    0.25334 |    -1.3126 |