Add TurboStream and StrippingStream properties

Port of !379 (merged) from run2-patches to master.

@erodrigu - slightly later than promised, but here it is.

DaVinciTests/tests/options/DVTestTurbo2016.py

+###############################################################################
+# (c) Copyright 2020 CERN for the benefit of the LHCb Collaboration           #
+#                                                                             #
+# This software is distributed under the terms of the GNU General Public      #
+# Licence version 3 (GPL Version 3), copied verbatim in the file "COPYING".   #
+#                                                                             #
+# In applying this licence, CERN does not waive the privileges and immunities #
+# granted to it by virtue of its status as an Intergovernmental Organization  #
+# or submit itself to any jurisdiction.                                       #
+###############################################################################
+'''Test accessing candidates on Turbo mdst.'''
+
+from Configurables import DaVinci, LoKi__HDRFilter
+from GaudiConf import IOHelper
+from PhysSelPython.Wrappers import AutomaticData, ValidBPVSelection, SelectionSequence
+
+# 2018 Turbo data.
+IOHelper('ROOT').inputFiles([
+    'PFN:root://eoslhcb.cern.ch//eos/lhcb/grid/prod/lhcb/swtest/lhcb/LHCb/Collision18/CHARMTWOBODY.MDST/00075136/0000/00075136_00000005_1.charmtwobody.mdst',
+    'PFN:root://eoslhcb.cern.ch//eos/lhcb/grid/prod/lhcb/swtest/lhcb/LHCb/Collision18/CHARMTWOBODY.MDST/00075136/0000/00075136_00000012_1.charmtwobody.mdst',
+    'PFN:root://eoslhcb.cern.ch//eos/lhcb/grid/prod/lhcb/swtest/lhcb/LHCb/Collision18/CHARMTWOBODY.MDST/00075136/0000/00075136_00000026_1.charmtwobody.mdst',
+])
+
+# Configure the data settings.
+DaVinci().TurboStream = 'Charmtwobody'
+DaVinci().DataType = '2018'
+DaVinci().DDDBtag = 'dddb-20190206-3'
+DaVinci().CondDBtag = 'cond-20191004-3'
+DaVinci().EvtMax = 1000
+
+# Get particles from an HLT2 line and check that they have a valid BPV
+line = 'Hlt2CharmHadDstp2D0Pip_D02KmPipTurbo'
+data = AutomaticData(line + '/Particles')
+validbpv = ValidBPVSelection([data])
+selseq = SelectionSequence(line + 'Seq', TopSelection=validbpv)
+DaVinci().UserAlgorithms.append(selseq.sequence())
+DaVinci().EventPreFilters = [
+    LoKi__HDRFilter(
+        'PreFilter',
+        Code='HLT_PASS({0!r})'.format(line + 'Decision'),
+        Location='Hlt2/DecReports')
+]