Update reference block to fix a tiny diff in ANN PID table

Related to LHCb!1288 (merged)

unmarked as a Work In Progress

changed the description

• [2018-04-30 00:22] Validation started with lhcb-lcg-dev3#510
• [2018-04-30 00:22] Validation started with lhcb-lcg-dev4#510
• [2018-04-30 00:25] Validation started with lhcb-tdr-test#136
• [2018-04-30 00:25] Validation started with lhcb-clang-test#937
• [2018-04-30 00:26] Validation started with lhcb-gaudi-head#1852
• [2018-04-30 00:29] Validation started with lhcb-gaudi-head-py3#139
• [2018-04-30 00:31] Validation started with lhcb-head#1837

changed the description

Note that a tiny diff remains between x86_64-slc6-gcc62-opt:

| Long/PionANN              | "Long Pion ANN PID"                           |   7906  |    0.60005 | 0.36299    |   -0.42812 |    -1.4233 |

and x86_64-centos7-gcc62-opt:

| Long/PionANN              | "Long Pion ANN PID"                           |   7906  |    0.60005 | 0.36299    |   -0.42813 |    -1.4233 |

merged

mentioned in commit dda31218