TESTS: adapt tests to enabled default files domain
Some tests expect that SSSD is compiled with --enable-files-domain
option (test_no_sssd_conf). But having this enabled by default
breaks some other tests.
This patch adds --enable-files-domain to test build and explicitly
disables the domain in configuration of some tests (ldap, enumeration).
Resolves:
https://bugzilla.redhat.com/show_bug.cgi?id=1713352
Reviewed-by: Alexey Tikhonov <atikhono@redhat.com>