Delete duplicate entries in the ssh config

[Panky-codes]

In this #3 issue, the host config has been added to the top of the file.

Whenever a make destroy and make bringup is done, the new host config is appended without deleting the same host's old config. This sort of pollutes the .ssh/config file with stale entries.

Or, even better solution is to have another config.kdevops file and it can be included in the main .ssh/config file as Include config.kdevops to not pollute the main config file.