Rename histos file

Rename Histogram output files from DVHistos.root to something user-defined.

added lhcb-run3-cleanup label

mentioned in merge request Analysis!781 (merged)

• [2021-05-03 13:12] Validation started with lhcb-master-mr#2267
• [2021-05-04 00:33] Validation started with lhcb-run3-cleanup#201
• [2021-05-05 00:11] Validation started with lhcb-gaudi-head#2920
• [2021-05-05 00:14] Validation started with lhcb-head#2935
• [2021-05-05 00:16] Validation started with lhcb-head-2#234
• [2021-05-05 00:17] Validation started with lhcb-lcg-dev4#1636
• [2021-05-05 00:18] Validation started with lhcb-lcg-dev3#1621
• [2021-05-05 00:24] Validation started with lhcb-lcg-test#177
• [2021-05-05 00:56] Validation started with lhcb-run3-cleanup#202
• [2021-05-05 01:20] Validation started with lhcb-head#2935
• [2021-05-05 01:25] Validation started with lhcb-sanitizers#850
• [2021-05-05 12:16] Validation started with lhcb-head#2936

added all-slots label

This is making my life hard. Merging so I can rebase other MRs.

merged

mentioned in commit 4306d9a2

added DPA-WP3 label