Add Container name to object Refs kept in DataHeader_p6

POOL does not need the container name (it is deducted internally) but other persistency technologies may make use of this field

Hi @gemmeren - here are the changes to DataHeader to add the Container name.
Cheers, Marcin

This merge request affects 1 package:

• Database/PersistentDataModelTPCnv

This merge request affects 3 files:

• Database/PersistentDataModelTPCnv/PersistentDataModelTPCnv/DataHeader_p6.h
• Database/PersistentDataModelTPCnv/src/DataHeaderCnv_p6.cxx
• Database/PersistentDataModelTPCnv/src/DataHeader_p6.cxx

Adding @ssnyder ,@mnowak as watchers

added Database master review-pending-level-1 labels

CI Result SUCCESS (hash 8c6a7506)

	Athena	AthSimulation	AthGeneration	AnalysisBase
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 24660]

added review-pending-level-2 label and removed review-pending-level-1 label

This looks fine to me, sending to L2 for the final sign off. Tom - L1 shifter

Looks good. Approving (L2)

added review-approved label and removed review-pending-level-2 label

Thanks @mnowak

merged

mentioned in commit fa30ca70

added sweep:ignore label