Iterating units fails on NoneType

#############################################################################
Delete the unit which is currently the leader (according to corosync)
#############################################################################

2018-08-15 15:35:45 [INFO] Pulling secrets from /tmp/tmp.Sw98pgauK0/LOCAL/mojo-openstack-specs/specs/storage/ceph/radosgw_ha/liberty to /tmp/tmp.Sw98pgauK0/mojo-openstack-specs/trusty/osci-mojo/local
2018-08-15 15:35:45 [WARNING] Automatic secrets phase ran but secrets directory /tmp/tmp.Sw98pgauK0/LOCAL/mojo-openstack-specs/specs/storage/ceph/radosgw_ha/liberty does not exist!
2018-08-15 15:35:45 [INFO] Running script delete_crm_leader.py
2018-08-15 15:35:52 [WARNING] No debug log matching debug-logs found. Using default.
2018-08-15 15:35:54 [ERROR] 2018-08-15 15:35:48 [INFO] Driver connected to juju wss://172.17.102.7:17070/model/9d7f3932-af3f-481a-8a67-21645dd9025f/api
2018-08-15 15:35:49 [INFO] Driver connected to juju wss://172.17.102.7:17070/model/9d7f3932-af3f-481a-8a67-21645dd9025f/api
2018-08-15 15:35:50 [INFO] Driver connected to juju wss://172.17.102.7:17070/model/9d7f3932-af3f-481a-8a67-21645dd9025f/api
2018-08-15 15:35:51 [INFO] Driver connected to juju wss://172.17.102.7:17070/model/9d7f3932-af3f-481a-8a67-21645dd9025f/api
2018-08-15 15:35:52 [INFO] Driver connected to juju wss://172.17.102.7:17070/model/9d7f3932-af3f-481a-8a67-21645dd9025f/api
Traceback (most recent call last):
  File "/tmp/tmp.Sw98pgauK0/mojo-openstack-specs/trusty/osci-mojo/spec/specs/storage/ceph/radosgw_ha/liberty/delete_crm_leader.py", line 29, in <module>
    sys.exit(main(sys.argv))
  File "/tmp/tmp.Sw98pgauK0/mojo-openstack-specs/trusty/osci-mojo/spec/specs/storage/ceph/radosgw_ha/liberty/delete_crm_leader.py", line 25, in main
    mojo_os_utils.delete_crm_leader(service, resource)
  File "/tmp/tmp.Sw98pgauK0/mojo-openstack-specs/trusty/osci-mojo/spec/helper/setup/utils/mojo_os_utils.py", line 471, in delete_crm_leader
    unit = mojo_utils.convert_machineno_to_unit(mach_no)
  File "/tmp/tmp.Sw98pgauK0/mojo-openstack-specs/trusty/osci-mojo/spec/helper/setup/utils/mojo_utils.py", line 102, in convert_machineno_to_unit
    for unit in juju_status['applications'][svc]['units']:
TypeError: 'NoneType' object is not iterable

The model above is stable:

Model Controller Cloud/Region Version SLA Timestamp
auto-osci-sv02 auto-osci-sv02 serverstack/serverstack 2.4.0 unsupported 15:35:54Z

App Version Status Scale Charm Store Rev OS Notes
ceph-mon 0.94.10 active 3 ceph-mon local 0 ubuntu
ceph-osd 0.94.10 active 3 ceph-osd local 15 ubuntu
ceph-radosgw 0.94.10 active 3 ceph-radosgw local 26 ubuntu
cephrgw-hacluster active 3 hacluster local 0 ubuntu
keystone 8.1.2 active 1 keystone local 0 ubuntu
mysql 5.5.37-25.10... active 1 percona-cluster local 45 ubuntu

Unit Workload Agent Machine Public address Ports Message
ceph-mon/0* active idle 0 172.17.102.10 Unit is ready and clustered
ceph-mon/1 active idle 1 172.17.102.13 Unit is ready and clustered
ceph-mon/2 active idle 2 172.17.102.4 Unit is ready and clustered
ceph-osd/0 active idle 3 172.17.102.17 Unit is ready (1 OSD)
ceph-osd/1 active idle 4 172.17.102.9 Unit is ready (1 OSD)
ceph-osd/2* active idle 5 172.17.102.11 Unit is ready (1 OSD)
ceph-radosgw/0 active idle 6 172.17.102.14 80/tcp Unit is ready
  cephrgw-hacluster/1* active idle 172.17.102.14 Unit is ready and clustered
ceph-radosgw/1* active idle 7 172.17.102.18 80/tcp Unit is ready
  cephrgw-hacluster/0 active idle 172.17.102.18 Unit is ready and clustered
ceph-radosgw/2 active idle 8 172.17.102.12 80/tcp Unit is ready
  cephrgw-hacluster/2 active idle 172.17.102.12 Unit is ready and clustered
keystone/0* active idle 9 172.17.102.16 5000/tcp Unit is ready
mysql/0* active idle 10 172.17.102.8 3306/tcp Unit is ready

Machine State DNS Inst id Series AZ Message
0 started 172.17.102.10 99433af0-dff7-4a42-b9fe-6b4113cd3687 trusty nova ACTIVE
1 started 172.17.102.13 67d45fc1-8edb-45c7-8e9c-3f2adcb80d2d trusty nova ACTIVE
2 started 172.17.102.4 27f42b8a-3f5f-46a8-b875-e85888d8cff0 trusty nova ACTIVE
3 started 172.17.102.17 55148343-3c27-4e3a-b871-4b6a738f9354 trusty nova ACTIVE
4 started 172.17.102.9 57fe9c8d-7577-4afd-9624-76a7379dde53 trusty nova ACTIVE
5 started 172.17.102.11 c5b5f1c3-5a96-4c77-8da5-7da8bffde5a9 trusty nova ACTIVE
6 started 172.17.102.14 f0b93320-b805-45d8-95e0-a09ede5ba4b7 trusty nova ACTIVE
7 started 172.17.102.18 6aad5bde-8bf7-4de9-886d-f20339ff7720 trusty nova ACTIVE
8 started 172.17.102.12 8f654325-372f-4c5f-849d-9de48c0bcc3d trusty nova ACTIVE
9 started 172.17.102.16 25cfe1b4-0238-4d3b-81e2-d9bf68f93909 trusty nova ACTIVE
10 started 172.17.102.8 a74e56ec-dadc-4e76-b1a9-70aa444e9f3e trusty nova ACTIVE

http://10.245.162.58:8080/job/mojo_runner/9995/ is the run