Openshift upgrade fails with ascii codec can't decode error

Issue

NOTE: This issue has been fixed in ERRATA RHSA-2017:1244

During the upgrade of Openshift Container Platform from 3.4 to 3.5 the Ansible task fails with the following error:

TASK [Check for invalid namespaces and SDN errors] *****************************
fatal: [master.example.com]: FAILED! => {
    "changed": false,
    "failed": true,
    "module_stderr": "Shared connection to master.example.com closed.\r\n",
    "module_stdout": "Traceback (most recent call last):\r\n  File \"/tmp/ansible_ryUzAE/ansible_module_oc_objectvalidator.py\", line 1420, in <module>\r\n    main()\r\n  File \"/tmp/ansible_ryUzAE/ansible_module_oc_objectvalidator.py\", line 1413, in main\r\n    rval = OCObjectValidator.run_ansible(module.params)\r\n  File \"/tmp/ansible_ryUzAE/ansible_module_oc_objectvalidator.py\", line 1375, in run_ansible\r\n    success, rval, invalid = objectvalidator.get_invalid(resource, invalid_filter)\r\n  File \"/tmp/ansible_ryUzAE/ansible_module_oc_objectvalidator.py\", line 1324, in get_invalid\r\n    rval = self._get(kind)\r\n  File \"/tmp/ansible_ryUzAE/ansible_module_oc_objectvalidator.py\", line 853, in _get\r\n    rval = self.openshift_cmd(cmd, output=True)\r\n  File \"/tmp/ansible_ryUzAE/ansible_module_oc_objectvalidator.py\", line 979, in openshift_cmd\r\n    returncode, stdout, stderr = self._run(cmds, input_data)\r\n  File \"/tmp/ansible_ryUzAE/ansible_module_oc_objectvalidator.py\", line 954, in _run\r\n    return proc.returncode, stdout.decode(), stderr.decode()\r\nUnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 1542: ordinal not in range(128)\r\n"
}