test000 fails if back-monitor is built as module (ITS#3125)

[pierangelo.masarati@sys-net.it]

Full_Name: Pierangelo Masarati
Version: HEAD
OS: irrelevant
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (81.74.43.82)


Test scripts don't handle the case of back-monitor being built as module;
test000 expects 3 entries, one of which is cn=monitor; if back-monitor is not
built, or built as module and, as such, not defined in slapd-schema.conf, the
test erroneously fails.