add ssh connection tests

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>

test/runner/test_ssh.rb

@@ -0,0 +1,22 @@
+# encoding: utf-8
+require_relative 'helper'
+require 'vulcano/backend'
+
+backends = {}
+
+backends[:specinfra_ssh] = proc {
+  backend_conf = Vulcano::Backend.target_config({
+    'target' => 'ssh://root@localhost',
+    'key_file' => '/root/.ssh/id_rsa',
+  })
+  backend_class = Vulcano::Backend.registry['specinfra']
+  backend_class.new(backend_conf)
+}
+
+tests = ARGV
+
+backends.each do |type, get_backend|
+  tests.each do |test|
+    instance_eval(File.read(test))
+  end
+end