def key_generation(options)
      SSHKey.generate(
        type: options[:type],
        bits: options[:bits],
        comment: 'ssh@fenton_shell',
        passphrase: options[:passphrase]
      )
    end
def key_generation(options)
      SSHKey.generate(
        type: options[:type],
        bits: options[:bits],
        comment: 'ssh@fenton_shell',
        passphrase: options[:passphrase]
      )
    end
Generates the SSH key pair

 @param options [Hash] fields from fenton command line
 @return [String] ssh key pair object created from the options hash