disconnect ldap2 backend after adding default CA ACL profiles
ensure_default_caacl() was leaking open api.Backend.ldap2 connection which
could crash server/replica installation at later stages. This patch ensures
that after checking default CA ACL profiles the backend is disconnected.
https://fedorahosted.org/freeipa/ticket/5459
Reviewed-By: Tomas Babej <tbabej@redhat.com>