Running logging playbook fails with "unicode object has no attribute iteritems" in OCP 3.11

Issue

• Error in nodeselector during configuration of EFK logging using variables through CLI

ansible-playbook -i inventory2 /usr/share/ansible/openshift-ansible/playbooks/openshift-logging/config.yml \
-e openshift_logging_install_logging=true \
-e openshift_logging_es_nodeselector={"node-role.kubernetes.io/infra":"true"} \
-e openshift_logging_fluentd_nodeselector={"node-role.kubernetes.io/infra":"true"} \
-e openshift_logging_curator_nodeselector={"node-role.kubernetes.io/infra":"true"} \
-e openshift_logging_kibana_nodeselector={"node-role.kubernetes.io/infra":"true"} \
-e openshift_logging_es_pvc_dynamic=true \
-e openshift_logging_es_pvc_storage_class_name=storage-class

Output:

FAILED! => {"msg": "An unhandled exception occurred while templating '{{ openshift_logging_es_nodeselector | map_to_pairs }}'. Error was a <type 'exceptions.AttributeError'>, original message: 'unicode' object has no attribute 'iteritems'"}