Consolidating "--ssl", "--ssl-secure", and "--ssl-insecure" options in stonith devices

Issue

Documentation for many stonith devices lists redundant options for --ssl and --ssl_secure options, and in some cases inclusion --ssl was required in order for these options to function as expected:

$ man fence_cisco_ucs
------------------------->8-------------------------
       ssl    Use SSL connection with verifying certificate

       ssl_insecure
              Use SSL connection without verifying certificate

       ssl_secure
              Use SSL connection with verifying certificate

The below affected stonith agents have been updated so that usage of --ssl is not required for --ssl_insecure or --ssl_secure options, and these can now be used independently of setting the --ssl:

• fence_cisco_ucs
• fence_docker
• fence_rhevm
• fence_vmware_rest
• fence_vmware_soap
• fence_vmware_vcloud
• fence_zvmip
• Fencing agents importing fencing.py that use the --ssl option.