BPHY5: Add non-constrained vertex fitting

Add non-constrained vertex fitting data, for parity with latest 21.2 version.

Build area was cleaned as per request posted in the DB. The full software build will be performed

This merge request affects 1 package:

• PhysicsAnalysis/DerivationFramework/DerivationFrameworkBPhys

This merge request affects 3 files:

• PhysicsAnalysis/DerivationFramework/DerivationFrameworkBPhys/DerivationFrameworkBPhys/ReVertex.h
• PhysicsAnalysis/DerivationFramework/DerivationFrameworkBPhys/python/BPHY5.py
• PhysicsAnalysis/DerivationFramework/DerivationFrameworkBPhys/src/ReVertex.cxx

Adding @emmat ,@jcatmore ,@wwalko ,@abarton as watchers

added Derivation main review-pending-level-1 labels

CI Result SUCCESS (hash 2bf2db36)

	Athena
externals
cmake
make
tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
For experts only: Jenkins output (remote access info)

removed review-pending-level-1 label

added review-approved label

merged

mentioned in commit ea80a36d