[freeipa PR#1487][opened] Fix pylint error in ipapython/dn.py

[tiran]

   URL: https://github.com/freeipa/freeipa/pull/1487
Author: tiran
 Title: #1487: Fix pylint error in ipapython/dn.py
Action: opened

PR body:
"""
ipapython/dn.py:1324: [R1710(inconsistent-return-statements), DN.__contains__]
Either all return statements in a function should return an expression, or none of them
should.)

Signed-off-by: Christian Heimes <cheimes(a)redhat.com&gt;

Manual backport of PR #1486 to speed things up.
"""

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/1487/head:pr1487
git checkout pr1487