disable warnings reported by pylint-1.6.4-1
Pylint shipped in Fedora 25 reports 'trailing-newlines' and
'consider-iterating-dictionary' warnings which break FreeIPA builds.
On ipa-4-4 branch it is safer to just disable these warnings so as to not mess
with code considered stable
https://fedorahosted.org/freeipa/ticket/6391
Reviewed-By: Martin Basti <mbasti@redhat.com>