Implement `mkdir' task action

features/actions/mkdir.feature

@@ -0,0 +1,14 @@
+@sshd
+Feature: `mkdir' task action
+
+  Scenario: creates directory given as argument
+    Given a recipe with:
+      """
+      target 'some_host.test'
+
+      task :create_some_dir do
+        mkdir 'some_directory'
+      end
+      """
+    When I successfully execute the recipe
+    Then the remote directory "some_directory" must exists