fix(upgrade pipeline): add version to stage
fix(upgrade pipeline): add version to stage

because in some cases we have upgrade running
for multiple different base versions, we are
seen stages with the same name (like the latest
splitted "checkout"), so adding the base version
to the stage name (as all other stages) will
make it much clearer.

scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests