SmartConnect- SSL error

.......
id: 554a16ad0a2db70d77220450
status: failed
result:
{
    "result": null,
    "exit_code": 1,
    "stderr": "/opt/stackstorm/virtualenvs/citeis/lib/python2.7/site-packages/re
quests/packages/urllib3/connectionpool.py:768: InsecureRequestWarning: Unverifie
d HTTPS request is being made. Adding certificate verification is strongly advis
ed. See: https://urllib3.readthedocs.org/en/latest/security.html
  InsecureRequestWarning)
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/site-packages/st2actions/runners/python_action_
wrapper.py", line 116, in <module>
    obj.run()
  File "/usr/local/lib/python2.7/site-packages/st2actions/runners/python_action_
wrapper.py", line 61, in run
    output = action.run(**self._parameters)
  File "/opt/stackstorm/packs/citeis/actions/convert_to_template.py", line 17, i
n run
    si = SmartConnect(host=vcenter, user=self.config["vcenter_user"], pwd=self.c
onfig["vcenter_password"], port=vcenter_port)
  File "/usr/local/lib/python2.7/site-packages/pyVim/connect.py", line 590, in S
martConnect
    path=path)
  File "/usr/local/lib/python2.7/site-packages/pyVim/connect.py", line 234, in C
onnect
    keyFile, certFile)
  File "/usr/local/lib/python2.7/site-packages/pyVim/connect.py", line 319, in _
_Login
    reraise(vim.fault.HostConnectFault, fault, traceback)
  File "/usr/local/lib/python2.7/site-packages/pyVim/connect.py", line 307, in _
_Login
    content = si.RetrieveContent()
  File "/usr/local/lib/python2.7/site-packages/pyVmomi/VmomiSupport.py", line 56
6, in <lambda>
    self.f(*(self.args + (obj,) + args), **kwargs)
  File "/usr/local/lib/python2.7/site-packages/pyVmomi/VmomiSupport.py", line 37
5, in _InvokeMethod
    return self._stub.InvokeMethod(self, info, args)
  File "/usr/local/lib/python2.7/site-packages/pyVmomi/SoapAdapter.py", line 125
4, in InvokeMethod
    conn.request('POST', self.path, req, headers)
  File "/usr/local/lib/python2.7/httplib.py", line 1001, in request
    self._send_request(method, url, body, headers)
  File "/usr/local/lib/python2.7/httplib.py", line 1035, in _send_request
    self.endheaders(body)
  File "/usr/local/lib/python2.7/httplib.py", line 997, in endheaders
    self._send_output(message_body)
  File "/usr/local/lib/python2.7/httplib.py", line 850, in _send_output
    self.send(msg)
  File "/usr/local/lib/python2.7/httplib.py", line 812, in send
    self.connect()
  File "/usr/local/lib/python2.7/httplib.py", line 1212, in connect
    server_hostname=server_hostname)
  File "/usr/local/lib/python2.7/ssl.py", line 350, in wrap_socket
    _context=self)
  File "/usr/local/lib/python2.7/ssl.py", line 566, in __init__
    self.do_handshake()
  File "/usr/local/lib/python2.7/ssl.py", line 788, in do_handshake
    self._sslobj.do_handshake()
pyVmomi.VmomiSupport.HostConnectFault: (vim.fault.HostConnectFault) {
   dynamicType = <unset>,
   dynamicProperty = (vmodl.DynamicProperty) [],
   msg = '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:581
)',
   faultCause = <unset>,
   faultMessage = (vmodl.LocalizableMessage) []
}
",