[bugfix][shared, Fedora, RHEL/6, RHEL/7] Initial pylint fixes

- Fix mixed indentation
- Update invalid single variables
- Removed trailing white spaces
[Fedora][RHEL/6][RHEL/7] Update verify-input-sanity.py

- Fix if statement closing parenthesis
Merge pull request #228 from redhatrises/pylint_fixes

[bugfix][shared, Fedora, RHEL/6, RHEL/7] Initial pylint fixes