Restart systemd-hostnamed before restarting NetworkManager in node user-data.

roles/openshift_aws/templates/user_data.j2

@@ -20,6 +20,9 @@ runcmd:
 - [ ansible-playbook, /root/openshift_bootstrap/bootstrap.yml]
 {%     endif %}
 {%     if openshift_aws_node_group.group != 'master' %}
+{# Restarting systemd-hostnamed ensures that instances will have FQDN
+hostnames following network restart. #}
+- [ systemctl, restart, systemd-hostnamed]
 - [ systemctl, restart, NetworkManager]
 - [ systemctl, enable, {% if openshift_deployment_type == 'openshift-enterprise' %}atomic-openshift{% else %}origin{% endif %}-node]
 - [ systemctl, start, {% if openshift_deployment_type == 'openshift-enterprise' %}atomic-openshift{% else %}origin{% endif %}-node]