TESTS: Move get_call_output() to util.py This function will be reused outside of test_sssctl.py. Related: https://pagure.io/SSSD/sssd/issue/3658 Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com> Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

intg: Convert output of executed commands to strings We know that all our tested utilities (sssctl, sss_cache, sss_override) returns strings and not binary data. We can safely encode output to string (unicode) in python3 Reviewed-by: Martin Basti <mbasti@redhat.com>

test_sssctl: Add an integration test for sssctl netgroup-show Related: https://fedorahosted.org/sssd/ticket/3267 Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

tests: sssctl user/group-show basic tests Add basic tests for sssctl user/group-show commands. This includes regression test for ticket #3235. Resolves: https://fedorahosted.org/sssd/ticket/3235 Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>