AthenaCommon+AthenaConfiguration: Fix test failure in master.

Update AthenaCommon reference files for changes in how properties are dumped.

Tweak how condTool reads old configurations to match what the previous version of the code was doing.

This merge request affects 2 packages:

• Control/AthenaCommon
• Control/AthenaConfiguration

Adding @ssnyder as watcher

added Core master review-pending-level-1 labels

CI Result SUCCESS (hash 955f5d3a)

	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 20812]

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

merged

mentioned in commit b4c6cced

added sweep:ignore label

Fixes ATEAM-650.