pylint: fix errors
Fix the following errors:
I0021(useless-suppression)
R1710(inconsistent-return-statements)
E1101(no-member)
Ignore the following errors:
E0601(used-before-assignment)
The variable is imported when the code is run in_server.
Signed-off-by: Florence Blanc-Renaud <flo@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>