[ENGOPS-503] shared file update from distribute.groovy
[ENGOPS-668] prop version settings to correct SNAPSHOT(s)
SP-1428 - Backport of PDI-12318 - NullPointerException running job with massive parallel Job/Transformation loads (4.8)Backport of PDI-12318 - NullPointerException running job with massive parallel Job/Transformation loads (4.8)

backport originall issue fix to 4.+ branch
Fix 2 collections to respect concurrency.
See PDI-12318 comments for details.