ITS#2740, #2859 fixes for dynamic backends

tests/data/slapd-acl.conf

tests/data/slapd-cache-master.conf

tests/data/slapd-dnssrv.conf

tests/data/slapd-glue.conf

tests/data/slapd-master.conf

tests/data/slapd-nis-master.conf

tests/data/slapd-passwd.conf

tests/data/slapd-proxycache.conf

tests/data/slapd-pw.conf

tests/data/slapd-ref-slave.conf

tests/data/slapd-referrals.conf

tests/data/slapd-repl-master.conf

tests/data/slapd-repl-slave.conf

tests/data/slapd-schema.conf

tests/data/slapd-syncrepl-master.conf

tests/data/slapd-syncrepl-slave-persist1.conf

tests/data/slapd-syncrepl-slave-persist2.conf

tests/data/slapd-syncrepl-slave-persist3.conf

tests/data/slapd-syncrepl-slave-refresh1.conf

tests/data/slapd-syncrepl-slave-refresh2.conf