Description of problem:
2018-12-14.1 - RHOSP14 puddle 

[stack@undercloud-0 ~]$ heat stack-list
WARNING (shell) "heat stack-list" is deprecated, please use "openstack stack list" instead
/usr/lib/python2.7/site-packages/urllib3/connection.py:344: SubjectAltNameWarning: Certificate for 192.168.24.2 has no `subjectAltName`, falling back to check for a `commonName` for now. This feature is being removed by major browsers and deprecated by RFC 2818. (See https://github.com/shazow/urllib3/issues/497 for details.)
  SubjectAltNameWarning
/usr/lib/python2.7/site-packages/urllib3/connection.py:344: SubjectAltNameWarning: Certificate for 192.168.24.2 has no `subjectAltName`, falling back to check for a `commonName` for now. This feature is being removed by major browsers and deprecated by RFC 2818. (See https://github.com/shazow/urllib3/issues/497 for details.)
  SubjectAltNameWarning
+--------------------------------------+------------+-----------------+----------------------+--------------+----------------------------------+
| id                                   | stack_name | stack_status    | creation_time        | updated_time | project                          |
+--------------------------------------+------------+-----------------+----------------------+--------------+----------------------------------+
| 5028f067-f237-4d09-8bc9-a26c8f742c47 | overcloud  | CREATE_COMPLETE | 2018-12-17T12:10:10Z | None         | 1ccfe42c345b428081c7b8c1a0519b49 |
+--------------------------------------+------------+-----------------+----------------------+--------------+----------------------------------+


(undercloud) [stack@undercloud-0 ~]$ openstack overcloud status
None
+-----------+---------------------+---------------------+-------------------+
| Plan Name |       Created       |       Updated       | Deployment Status |
+-----------+---------------------+---------------------+-------------------+
| overcloud | 2018-12-17 12:28:16 | 2018-12-17 12:28:16 |   DEPLOY_SUCCESS  |
+-----------+---------------------+---------------------+-------------------+

(undercloud) [stack@undercloud-0 ~]$ openstack overcloud delete overcloud
Are you sure you want to delete this overcloud [y/N]? y
Undeploying stack overcloud...
Error occurred during stack delete name


(undercloud) [stack@undercloud-0 ~]$ heat stack-list
WARNING (shell) "heat stack-list" is deprecated, please use "openstack stack list" instead
/usr/lib/python2.7/site-packages/urllib3/connection.py:344: SubjectAltNameWarning: Certificate for 192.168.24.2 has no `subjectAltName`, falling back to check for a `commonName` for now. This feature is being removed by major browsers and deprecated by RFC 2818. (See https://github.com/shazow/urllib3/issues/497 for details.)
  SubjectAltNameWarning
/usr/lib/python2.7/site-packages/urllib3/connection.py:344: SubjectAltNameWarning: Certificate for 192.168.24.2 has no `subjectAltName`, falling back to check for a `commonName` for now. This feature is being removed by major browsers and deprecated by RFC 2818. (See https://github.com/shazow/urllib3/issues/497 for details.)
  SubjectAltNameWarning
+--------------------------------------+------------+-----------------+----------------------+--------------+----------------------------------+
| id                                   | stack_name | stack_status    | creation_time        | updated_time | project                          |
+--------------------------------------+------------+-----------------+----------------------+--------------+----------------------------------+
| 5028f067-f237-4d09-8bc9-a26c8f742c47 | overcloud  | CREATE_COMPLETE | 2018-12-17T12:10:10Z | None         | 1ccfe42c345b428081c7b8c1a0519b49 |
+--------------------------------------+------------+-----------------+----------------------+--------------+----------------------------------+

(undercloud) [stack@undercloud-0 ~]$ openstack overcloud status
None
+-----------+---------------------+---------------------+-------------------+
| Plan Name |       Created       |       Updated       | Deployment Status |
+-----------+---------------------+---------------------+-------------------+
| overcloud | 2018-12-17 12:28:16 | 2018-12-17 12:28:16 |   DEPLOY_SUCCESS  |
+-----------+---------------------+---------------------+-------------------+

Version-Release number of selected component (if applicable):
python-tripleoclient-10.6.1-0.20181010222412.8c8f259.el7ost.noarch

How reproducible:
always

Steps to Reproduce:
1.Deploy Overcloud
2.try to delete Overcloud using 'openstack overcloud delete overcloud'

Actual results:
Deleting process wasn't start

Expected results:
Deleting process was start

Additional info: