[freeipa PR#3737][opened] [Backport][ipa-4-6] Fixed errors newly exposed by pylint 2.4.0

[frasertweedale]

   URL: https://github.com/freeipa/freeipa/pull/3737
Author: frasertweedale
 Title: #3737: [Backport][ipa-4-6] Fixed errors newly exposed by pylint 2.4.0
Action: opened

PR body:
"""
Manual backport of https://github.com/freeipa/freeipa/pull/3727.

Newest Pylint introduced additional checks [1]:

- import-outside-toplevel [2]

>  This check warns when modules are imported from places other
than a module toplevel, e.g. inside a function or a class.

- no-else-continue [3]

>  These checks highlight unnecessary else and elif blocks after
break and continue statements.

- unnecessary-comprehension [4]

>  This check is emitted when pylint finds list-, set- or
dict-comprehensions, that are unnecessary and can be rewritten
with the list-, set- or dict-constructors.

[1] https://github.com/PyCQA/pylint/blob/pylint-2.4.0/doc/whatsnew/2.4.rst
[2] https://github.com/PyCQA/pylint/issues/3067
[3] https://github.com/PyCQA/pylint/issues/2327
[4] https://github.com/PyCQA/pylint/issues/2905

Fixes: https://pagure.io/freeipa/issue/8077
"""

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/3737/head:pr3737
git checkout pr3737

[freeipa PR#3737][closed] [Backport][ipa-4-6] Fixed errors newly exposed by pylint 2.4.0

[frasertweedale]

   URL: https://github.com/freeipa/freeipa/pull/3737
Author: frasertweedale
 Title: #3737: [Backport][ipa-4-6] Fixed errors newly exposed by pylint 2.4.0
Action: closed

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/3737/head:pr3737
git checkout pr3737