reduce nEventsPerJob by x10 for the critical diboson JOs
Reduces the nEventsPerJob by x10 for the diboson jobs failing in https://its.cern.ch/jira/browse/ATLMCPROD-10942.
Reduces the nEventsPerJob by x10 for the diboson jobs failing in https://its.cern.ch/jira/browse/ATLMCPROD-10942.