revert retry loops in winbindd_ads as abartket points out, we

revert retry loops in winbindd_ads as abartket points out, we
already have ads_search_retry() for this.  However, neither
domain_sid() nor sequence_nunber() used this function.  So modify
them to us ads_do_search_retry() so we can specify the base search
DN and scope.
(This used to be commit 89f6adf830187d020bf4b35d1a4b2b48c7a075d0)