Add domain_resolution_order config option
    
    This is the local equivalent of option of ipaDomainResolutionOrder and
    has precedence over the ones set on IPA side making the precedence order
    to be like: Local > View > Globally.
    
    As done for the IPA side configurations, the domains which were not
    explicitly set up will be apennded to the final of the
    domain_resolution_order list in the very same order they're presented in
    the "domains" option of [sssd] section in the config file. There's no
    guarantee of order for the subdomains though.
    
    It's also important to mention that no expansion magic is performed on
    our side. It means that if 'example.com' is set it does *not* stand for
    all its subdomains DNS wise (like 'foo.example.com', 'bar.example.com',
    etc).
    
    Related:
    https://pagure.io/SSSD/sssd/issue/3001
    
    Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
    
    Reviewed-by: Sumit Bose <sbose@redhat.com>
    Reviewed-by: Pavel Březina <pbrezina@redhat.com>