Problem in propagating the change of a module label to donwstream InputTags

[Martin-Grunewald]

See here:

https://its.cern.ch/jira/browse/CMSHLT-2901?focusedId=4921551&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-4921551

Made this hlt-confdb issue as the CMSHLT jira issue above is closed and thus gets forgotten.