When deployed using Director using default configuration, Opendaylight in RHOSP13 is configured with easily guessable default credentials.
Product Bug: https://bugzilla.redhat.com/show_bug.cgi?id=1594328
This issue has been addressed in the following products: Red Hat OpenStack Platform 13.0 (Queens) Via RHSA-2018:2214 https://access.redhat.com/errata/RHSA-2018:2214