Bug 34485708

Deleting a node from grid fails due to SSH configuration issue and returns the following error:
[PILOT-00452] Unable to establish SSH connection to node1 to execute command
"Grid_home/deinstall/deinstall" 
CAUSE: An attempt to connect to specified node to execute specified command using SSH failed. 
ACTION: Make sure that the specified node is reachable and the SSH daemon on the specified
node is alive.

Workaround:

Update OpenSSH format to RSA format by running the following command on all nodes:
ssh-keygen -p -f private_key_location -m pem
Example: ssh-keygen -p -f ~/.ssh/id_rsa -m pem