ssl_insecure=1 オプションを fence_vmware_soap で使用するとセキュリティー警告が表示されるのはなぜですか?

Issue

• ssl_insecure=1 オプションを指定して fence_vmware_soap を使用すると、ログに次の警告が表示されます。

  stonith-ng[1224]: warning: fence_vmware_soap[7777] stderr: [ /usr/lib/python2.7/site-packages/urllib3/connectionpool.py:769: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.org/en/latest/security.html ]
  stonith-ng[1224]: warning: fence_vmware_soap[7777] stderr: [   InsecureRequestWarning) ]
  

• --ssl-insecure を指定してコマンドラインから fence_vmware_soap を実行すると、次の警告が表示されます。

  /usr/lib/python2.7/site-packages/urllib3/connectionpool.py:852: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings