InDetBeamSpotReader: Make printout more concise

Print one line per event with all beamspot information instead of the column-wise format. Also take EventID from EventContext instead of EventInfo.

This merge request affects 1 package:

• InnerDetector/InDetCalibAlgs/InDetBeamSpotFinder

Adding @amorley ,@csuster as watchers

added InnerDetector master review-pending-level-1 labels

CI Result SUCCESS (hash 0a388c21)

	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 4366]

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

merged

mentioned in commit cae8cf77

added sweep:ignore label