TESTS: Fix the ldap_id_cleanup test for using qualified names in sysdb Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

test_ldap_id_cleanup: Fix coding style issues Reviewed-by: Pavel Březina <pbrezina@redhat.com>

tests: Use unique name for TEST_PATH We had a cases in patch where two tests were using the same TEST_PATH and therefore they were stepping each other to the same files which caused failures. These failures are not easy to reproduce. This patch uses macro BASE_FILE_STEM for unique name. It should prevent copy&paste problem resulting to intermittent failures. @see also https://www.gnu.org/software/make/manual/html_node/Automatic-Variables.html Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

TESTS: fix fail in test_id_cleanup_exp_group Test was named same as the folder containing its data. Resolves: https://fedorahosted.org/sssd/ticket/2768 Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

TESTS: ldap_id_cleanup timeouts The one second timeout interval was sometimes too short when the tests where running under Valgrind in the CI and the entries expired too soon. Reviewed-by: Petr Cech <pcech@redhat.com>

LDAP: sanitize group name when used in filter cleanup_groups() uses DN of group in filter for ldbsearch. But the name might contain characters with special meaning for filtering like - "*()\/" Resolves: https://fedorahosted.org/sssd/ticket/2744 Reviewed-by: Pavel Březina <pbrezina@redhat.com>