In `Node-restart` experiment SSH key name (id-rsa) doesn't change even we change the name in experiment.yaml

[ajay-kumar-1]

Hello,

I had id-rsa key already on my namespace to have the SSH into XYZ server.

I modified the name of the key inside the experiment.yaml file but still node-restart experiment use the hardcoded key name (id-rsa) for my experiment.

By this issue, I would like to parameterize the name of SSH KEY in to code

[ajay-kumar-1]

I will propose a MR for this issue.