Ansible tests failing to change log levels

Ansible tests in RelEng from latest master are failing with:

TASK [get log levels] **********************************************************
changed: [localhost] => {"changed": true, "cmd": ["/opt/opendaylight/bin/client", "log:get"], "delta": "0:00:05.256665", "end": "2018-10-16 18:02:13.065680", "rc": 0, "start": "2018-10-16 18:02:07.809015", "stderr": "", "stderr_lines": [], "stdout": "client: JAVA_HOME not set; results may vary\nLogger │ Level\n────────────────────────────────────┼──────\nROOT │ INFO\norg.apache.aries.spifly │ WARN\norg.apache.karaf.jaas.modules.audit │ INFO", "stdout_lines": ["client: JAVA_HOME not set; results may vary", "Logger │ Level", "────────────────────────────────────┼──────", "ROOT │ INFO", "org.apache.aries.spifly │ WARN", "org.apache.karaf.jaas.modules.audit │ INFO"]}

TASK [assert ROOT log level set to DEBUG] **************************************
fatal: [localhost]: FAILED! =>

Unknown macro: { "assertion"}

to retry, use: --limit @/w/workspace/ansible-test-rpm-master/ansible/tests/test-odl-logs.retry

PLAY RECAP *********************************************************************
localhost : ok=1 changed=1 unreachable=0 failed=1

Build step 'Execute shell' marked build as failure

https://logs.opendaylight.org/releng/vex-yul-odl-jenkins-1/ansible-test-rpm-master/798/console.log.gz

https://logs.opendaylight.org/releng/vex-yul-odl-jenkins-1/ansible-test-rpm-master/797/console.log.gz