include Rivet_i back in the build

in LCGpython3_atlas_1 Rivet was removed from the build (with a comment that it should be put back for the next LCG layer) This MR is to put Rivet_i back in the AthGeneration build

CC @cgutscho

This merge request affects 1 package:

• Projects/AthGeneration

This merge request affects 1 file:

• Projects/AthGeneration/package_filters.txt

Adding @akraszna as watcher

added Build master review-pending-level-1 labels

changed the description

removed Build master review-pending-level-1 labels

CI Result SUCCESS (hash 82277098)

	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 29670]

added 21.0-mc16d review-pending-expert labels

removed 21.0-mc16d label

removed review-pending-expert label

added master review-pending-level-1 labels

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

mentioned in commit cce326e0

merged

added sweep:ignore label