B2taunu with btracking lines

HLT2 lines for B2tau(23pinu)nu with B-tracking. Added to semileptonic lines, with persistreco=True (going into FULL stream).

Needs Rec!2868 (merged), LHCb!4208 (merged), Detector!462 (merged), lhcb-datapkg/PRConfig!339 (merged)

needs gaudi/Gaudi!1489 (merged) and lhcb-datapkg/PRConfig!339 (merged) to be merged (and for v37?)

FYI: @sklaver, @mmulder

Standard rate test (upgrade_minbias_hlt1_filtered; inclusive is all semileptonic lines):

Line:    Hlt2SLB_BToDPiPi_DToKPiPi_BTrackingDecision                     Incl: 0.0 +/- 0.0 kHz, Excl: 0.0 +/- 0.0 kHz
Line:    Hlt2SLB_BToTauNu_TauToPiPiPiNu_BTrackingDecision                Incl: 0.77087 +/- 0.2912 kHz,  Excl: 0.44049 +/- 0.2202 kHz

NOTE: for Sprucing still to be decided, add in later MR? Following !2360 (merged) at least. Persistreco has similar consideration, in principle there for isolation. The HF track objects do need to be persisted (again). VP raw banks preferably too.

See for more info also slides

Hlt/Hlt2Conf/python/Hlt2Conf/lines/semileptonic/HbToTauNu_BTracking.py

@@ -178,7 +178,8 @@ def make_b2dpipi_d2kpipi(process,
 def make_line_with_btracking(process,
                              make_line,
                              mcorr_min=None,
-                             make_pvs=make_pvs):
+                             make_pvs=make_pvs,
+                             force_sharedcontainer=False):
     """
     adds heavy flavour tracking to line with possible corrected mass requirement based on btracking hits
     """
@@ -187,11 +188,15 @@ def make_line_with_btracking(process,
     ], 'Line must be defined as Hlt2 line, as it requires VP hits!'
 
     parts = make_line(process)
-    btracks = make_veloheavyflavourtracks(composites=parts, pvs=make_pvs())
-    if mcorr_min:
-        code = require_all(F.MCORRBTRACKING(btracks))
+    btrack_alg = make_veloheavyflavourtracks(composites=parts, pvs=make_pvs())
+    if mcorr_min or force_sharedcontainer:
+        code = require_all(
+            F.BTRACKING_BPVCORRM(btrack_alg.OutputLocation) > mcorr_min
+        ) if mcorr_min else require_all(F.ALL)
         filterparts = ParticleFilter(
-            parts, F.FILTER(code), name=parts.name + "_With_BTracking_Filter")
-        return filterparts, btracks
+            parts,
+            F.FILTER(code),
+            name=parts.producer.name + "_With_BTracking_Filter")
+        return filterparts, btrack_alg
     else:
-        return parts, btracks
+        return parts, btrack_alg