Title: #933: Unify the indentation to 4 spaces
The Coding guidelines include the following:
MUST: No tabs all indentation 4 spaces.
However, there are places that are indented in 3 spaces or 7 spaces.
Unify 3 spaces or 7 spaces indentation to 4 spaces.
To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/933/head:pr933
git checkout pr933