Update to post processing of pflow test with one thread

Update CMakeLists.txt to put all the new test executable scripts into paths. Update pflow test with one thread to get the psotprocessing script via central paths.

This merge request affects 1 package:

• Reconstruction/RecExample/RecExRecoTest

added Reconstruction master review-pending-level-1 labels

CI Result SUCCESS

	Athena	AthSimulation
externals
cmake
make
required tests
optional tests

Full details available at NICOS MR-23509-2019-05-17-15-46
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST 38605]

approved this merge request

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

merged

mentioned in commit db32298f

added sweep:ignore label