xAODTrigMissingETAthenaPool: Add tests for reading old data.

Add tests to verify backwards compatibility by reading old data files.

This merge request affects 1 package:

• Event/xAOD/xAODTrigMissingETAthenaPool

Adding @rbianchi as watcher

added EDM JetEtmiss Trigger master review-pending-level-1 labels

CI Result FAILURE (hash a52e7bca)

	Athena	AthSimulation
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
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 4347]

Looks fine, test failures are unrelated to this MR.

Pavol [as L2 MR shifter]

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

merged

mentioned in commit af12ea4a

added sweep:ignore label