Comment 0 for bug 1798538

The tripleo-ci-centos-7-containers-multinode and scenario-multinode jobs are overcloud deploy ": Incorrect arguments: Items to concat must be lists" trace looks like

  2018-10-18 04:00:17 | 2018-10-18 03:59:51Z [overcloud.ControllerServiceChain]: CREATE_FAILED Error in 21 output role_data: Incorrect arguments: Items to concat must be lists.
  2018-10-18 04:00:17 | 2018-10-18 03:59:51Z [overcloud.ControllerServiceChain]: CREATE_FAILED resources.ControllerServiceChain: Error in 21 output role_data: Incorrect arguments: Items to concat must be lists.
  2018-10-18 04:00:17 | 2018-10-18 03:59:51Z [overcloud]: CREATE_FAILED Resource CREATE failed: resources.ControllerServiceChain: Error in 21 output role_data: Incorrect arguments: Items to concat must be lists.
  2018-10-18 04:00:17 |
  2018-10-18 04:00:17 | Stack overcloud/c1527b61-19f1-484c-a6fc-5d69c35b3a63 CREATE_FAILED

examples at [1,2]... not sure yet if this is related to https://bugs.launchpad.net/tripleo/+bug/1798525

[1] http://logs.openstack.org/80/604180/39/check/tripleo-ci-centos-7-scenario001-multinode-oooq-container/5d0b572/logs/undercloud/home/zuul/overcloud_deploy.log.txt.gz#_2018-10-18_04_00_17
[2] http://logs.openstack.org/80/604180/39/check/tripleo-ci-centos-7-containers-multinode/5e76077/logs/undercloud/home/zuul/overcloud_deploy.log.txt.gz#_2018-10-18_03_36_49