Merge branch 'rivet-302' into 'master'

Test Rivet 3.0.2

See merge request !301

cmake/toolchain/heptools-dev3.cmake

@@ -10,3 +10,5 @@ LCG_external_package(hepmc3  HEAD     GIT=https://gitlab.cern.ch/hepmc/HepMC3.gi
 LCG_remove_package(DD4hep)
 LCG_AA_project(DD4hep        master   GIT=https://github.com/AIDASoft/DD4hep.git   )
 LCG_remove_package(Gaudi)
+LCG_remove_package(rivet)
+LCG_external_package(rivet            3.0.2          ${MCGENPATH}/rivet yoda=1.7.7 )

cmake/toolchain/heptools-dev3python3.cmake

@@ -8,3 +8,6 @@ include(heptools-dev-generators)
 LCG_external_package(ROOT         HEAD   GIT=http://root.cern.ch/git/root.git        )
 LCG_external_package(hepmc3       HEAD   GIT=https://gitlab.cern.ch/hepmc/HepMC3.git )
 LCG_remove_package(Gaudi)
+LCG_remove_package(rivet)
+LCG_external_package(rivet              3.0.2          ${MCGENPATH}/rivet yoda=1.7.7 )
+