update to LCG_98python3_ATLAS_6

update to LCG_98python3_ATLAS_6 which contains generator versions that are currently used in rel. 21.6 it is needed for validation of generators running in master

added full-build full-unit-tests labels

build area is cleaned as MR is labeled as full-build

This merge request affects 6 packages:

• Projects/AthAnalysis
• Projects/AthDataQuality
• Projects/AthGeneration
• Projects/AthSimulation
• Projects/Athena
• Projects/VP1Light

Affected files list will not be printed in this case

Adding @krumnack ,@jchapman ,@akraszna ,@rbianchi as watchers

added Build master review-pending-level-1 labels

CI Result SUCCESS (hash 9f104daa)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis
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
AthAnalysis: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 27937]

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

merged

mentioned in commit c623339b

added sweep:ignore label