Extract ssh and sshkit configuration

lib/mrsk/configuration/ssh.rb

@@ -0,0 +1,24 @@
+class Mrsk::Configuration::Ssh
+  def initialize(config:)
+    @config = config.raw_config.ssh || {}
+  end
+
+  def user
+    config.fetch("user", "root")
+  end
+
+  def proxy
+    if (proxy = config["proxy"])
+      Net::SSH::Proxy::Jump.new(proxy.include?("@") ? proxy : "root@#{proxy}")
+    elsif (proxy_command = config["proxy_command"])
+      Net::SSH::Proxy::Command.new(proxy_command)
+    end
+  end
+
+  def options
+    { user: user, proxy: proxy, auth_methods: [ "publickey" ], keepalive: true, keepalive_interval: 30 }.compact
+  end
+
+  private
+    attr_accessor :config
+end