Why are Jobs In Ansible Tower Failing With "bad handshake, certificate verify failed" Error ?

Issue

Ansible Tower jobs are failing at parsing inventory with bad handshake and certificate verify failed errors.

Inventory script (/var/factcache/awx_25070_hVo0Yy/tmpVZ6COG.awxrest.py) had an
execution error: ("bad handshake: Error([('SSL routines',
'tls_process_server_certificate', 'certificate verify failed')],)",) None
  File "/usr/lib/python2.7/site-packages/ansible/plugins/inventory/script.py", line 86, in parse
    raise AnsibleError("Inventory script (%s) had an execution error: %s " % (path, err))
 [WARNING]:  * Failed to parse