DQM/Integration package added back to CMSSW

all the added files are only used in the online. they don't affect the offline workflows. needed in 71X for the July GR. will be automatically forward ported to 72X.
This was used as a rollback version to the fu_pp.py configuration in the same directory. However now the difference with fu_pp.py is only in the file list, so it could be removed.