Description of problem:
RFE 1449183 has implemented adding an option to use hexadecimal-encoded key in current fence_agent which is required for Cisco C240 M4SX CIMC.

This also needs to be integrated in RHV.

Additional info:
With ipmitool, it is possible to use it but in fence_agent it was not available.

Working: 
# ipmitool -I lanplus -y $(hexadecimal-encoded Kg key for IPMIv2 authentication) -H 10.0.0.1 -U USERNAME -P PASSWORD -L Administrator chassis power status

Adding below line to /sbin/fence_ipmilan after "cmd = options["--ipmitool-path"] " helped as workaround for now.
~~~
cmd += " -y $(hexadecimal-encoded Kg key for IPMIv2 authentication)".
~~~

I am not sure if we can directly use -y in options and provide the key or any additional thing is required. 

Also RHV-Host needs this feature included.