Add docstrings to lib/pipeline and pep8 mods
Add docstrings to lib/pipeline and pep8 mods


Former-commit-id: 59f6007d85d655b1c20b1b85848022ccb6c4926b
pkug/intelmq,pkug/intelmq,pkug/intelmq,aaronkaplan/intelmq,sch3m4/intelmq,sch3m4/intelmq,certtools/intelmq,sch3m4/intelmq,aaronkaplan/intelmq,certtools/intelmq,aaronkaplan/intelmq,sch3m4/intelmq,robcza/intelmq,pkug/intelmq,robcza/intelmq,robcza/intelmq,certtools/intelmq,robcza/intelmq